257511710655016 has 16 divisors (see below), whose sum is σ = 493107531042240. Its totient is φ = 126016369043760.

The previous prime is 257511710655011. The next prime is 257511710655037. The reversal of 257511710655016 is 610556017115752.

It is a super-2 number, since 2×257511710655016² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (257511710655011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342435785070 + ... + 342435785821.

It is an arithmetic number, because the mean of its divisors is an integer number (30819220690140).

Almost surely, 2^{257511710655016} is an apocalyptic number.

It is an amenable number.

257511710655016 is a deficient number, since it is larger than the sum of its proper divisors (235595820387224).

257511710655016 is a wasteful number, since it uses less digits than its factorization.

257511710655016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684871570944 (or 684871570940 counting only the distinct ones).

The product of its (nonzero) digits is 2205000, while the sum is 52.

The spelling of 257511710655016 in words is "two hundred fifty-seven trillion, five hundred eleven billion, seven hundred ten million, six hundred fifty-five thousand, sixteen".