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245964247381 = 892763643229
BaseRepresentation
bin1110010100010010011…
…1001001000101010101
3212111212200010101022001
43211010213021011111
513012213321404011
6304554443235301
723525136415066
oct3450447110525
9774780111261
10245964247381
1195349450606
123b804b18b31
131a26ac2cca8
14bc9483256d
1565e88807c1
hex39449c9155

245964247381 has 4 divisors (see below), whose sum is σ = 248727890700. Its totient is φ = 243200604064.

The previous prime is 245964247369. The next prime is 245964247409. The reversal of 245964247381 is 183742469542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 183742469542 = 291871234771.

It can be written as a sum of positive squares in 2 ways, for example, as 138730921156 + 107233326225 = 372466^2 + 327465^2 .

It is a cyclic number.

It is not a de Polignac number, because 245964247381 - 225 = 245930692949 is a prime.

It is a super-2 number, since 2×2459642473812 (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245964247181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1381821526 + ... + 1381821703.

It is an arithmetic number, because the mean of its divisors is an integer number (62181972675).

Almost surely, 2245964247381 is an apocalyptic number.

It is an amenable number.

245964247381 is a deficient number, since it is larger than the sum of its proper divisors (2763643319).

245964247381 is an equidigital number, since it uses as much as digits as its factorization.

245964247381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2763643318.

The product of its digits is 11612160, while the sum is 55.

The spelling of 245964247381 in words is "two hundred forty-five billion, nine hundred sixty-four million, two hundred forty-seven thousand, three hundred eighty-one".

Divisors: 1 89 2763643229 245964247381