10239745257 has 36 divisors (see below), whose sum is σ = 17216702256. Its totient is φ = 5847493680.

The previous prime is 10239745247. The next prime is 10239745283. The reversal of 10239745257 is 75254793201.

It is a happy number.

10239745257 is a `hidden beast` number, since 1 + 0 + 2 + 397 + 4 + 5 + 257 = 666.

It is not a de Polignac number, because 10239745257 - 2¹⁵ = 10239712489 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (10239745247) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 763782 + ... + 777072.

Almost surely, 2^10239745257 is an apocalyptic number.

It is an amenable number.

10239745257 is a deficient number, since it is larger than the sum of its proper divisors (6976956999).

10239745257 is a wasteful number, since it uses less digits than its factorization.

10239745257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15058 (or 15048 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 10239745257 in words is "ten billion, two hundred thirty-nine million, seven hundred forty-five thousand, two hundred fifty-seven".