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254352140215441 = 5315730567496721
BaseRepresentation
bin111001110101010011111000…
…111101110010010010010001
31020100120211022222102102122221
4321311103320331302102101
5231314301140343343231
62300543432103501041
7104401223101350352
oct7165237075622221
91210524288372587
10254352140215441
1174054156228944
122463b195157781
13abc03c48a7668
1446b49d0357d29
151e61439a6ad11
hexe754f8f72491

254352140215441 has 8 divisors (see below), whose sum is σ = 260801882032104. Its totient is φ = 247963533392640.

The previous prime is 254352140215337. The next prime is 254352140215447. The reversal of 254352140215441 is 144512041253452.

It can be written as a sum of positive squares in 4 ways, for example, as 88335486500416 + 166016653715025 = 9398696^2 + 12884745^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 254352140215441 - 217 = 254352140084369 is a prime.

It is a super-3 number, since 3×2543521402154413 (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254352140215447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15283740040 + ... + 15283756681.

It is an arithmetic number, because the mean of its divisors is an integer number (32600235254013).

Almost surely, 2254352140215441 is an apocalyptic number.

It is an amenable number.

254352140215441 is a deficient number, since it is larger than the sum of its proper divisors (6449741816663).

254352140215441 is a wasteful number, since it uses less digits than its factorization.

254352140215441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30567496931.

The product of its (nonzero) digits is 768000, while the sum is 43.

Adding to 254352140215441 its reverse (144512041253452), we get a palindrome (398864181468893).

The spelling of 254352140215441 in words is "two hundred fifty-four trillion, three hundred fifty-two billion, one hundred forty million, two hundred fifteen thousand, four hundred forty-one".

Divisors: 1 53 157 8321 30567496721 1620077326213 4799096985197 254352140215441