257607655111907 has 8 divisors (see below), whose sum is σ = 274174316264016. Its totient is φ = 241198023923712.

The previous prime is 257607655111853. The next prime is 257607655111909. The reversal of 257607655111907 is 709111556706752.

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

It is not a de Polignac number, because 257607655111907 - 2³⁸ = 257332777204963 is a prime.

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 257607655111907.

It is not an unprimeable number, because it can be changed into a prime (257607655111909) 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, 39257487593 + ... + 39257494154.

It is an arithmetic number, because the mean of its divisors is an integer number (34271789533002).

Almost surely, 2^{257607655111907} is an apocalyptic number.

257607655111907 is a deficient number, since it is larger than the sum of its proper divisors (16566661152109).

257607655111907 is a wasteful number, since it uses less digits than its factorization.

257607655111907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78514981957.

The product of its (nonzero) digits is 27783000, while the sum is 62.

The spelling of 257607655111907 in words is "two hundred fifty-seven trillion, six hundred seven billion, six hundred fifty-five million, one hundred eleven thousand, nine hundred seven".