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10654420457 = 97710905241
BaseRepresentation
bin10011110110000110…
…11000110111101001
31000111112011122020002
421323003120313221
5133310012423312
64521121112345
7525012036212
oct117303306751
930445148202
1010654420457
11457816286a
1220941886b5
13100a45b505
14731034409
1542557a4c2
hex27b0d8de9

10654420457 has 4 divisors (see below), whose sum is σ = 10665326676. Its totient is φ = 10643514240.

The previous prime is 10654420451. The next prime is 10654420463. The reversal of 10654420457 is 75402445601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (10654420451) and next prime (10654420463).

It can be written as a sum of positive squares in 2 ways, for example, as 8191879081 + 2462541376 = 90509^2 + 49624^2 .

It is a cyclic number.

It is not a de Polignac number, because 10654420457 - 26 = 10654420393 is a prime.

It is a super-2 number, since 2×106544204572 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10654420457.

It is not an unprimeable number, because it can be changed into a prime (10654420451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5451644 + ... + 5453597.

It is an arithmetic number, because the mean of its divisors is an integer number (2666331669).

Almost surely, 210654420457 is an apocalyptic number.

It is an amenable number.

10654420457 is a deficient number, since it is larger than the sum of its proper divisors (10906219).

10654420457 is an equidigital number, since it uses as much as digits as its factorization.

10654420457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10906218.

The product of its (nonzero) digits is 134400, while the sum is 38.

The spelling of 10654420457 in words is "ten billion, six hundred fifty-four million, four hundred twenty thousand, four hundred fifty-seven".

Divisors: 1 977 10905241 10654420457