257263893704 has 16 divisors (see below), whose sum is σ = 482916099120. Its totient is φ = 128486267280.

The previous prime is 257263893703. The next prime is 257263893737. The reversal of 257263893704 is 407398362752.

It is a super-2 number, since 2×257263893704² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 257263893704.

It is not an unprimeable number, because it can be changed into a prime (257263893703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18202442 + ... + 18216569.

It is an arithmetic number, because the mean of its divisors is an integer number (30182256195).

Almost surely, 2^257263893704 is an apocalyptic number.

It is an amenable number.

257263893704 is a deficient number, since it is larger than the sum of its proper divisors (225652205416).

257263893704 is a wasteful number, since it uses less digits than its factorization.

257263893704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36419900 (or 36419896 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 56.

The spelling of 257263893704 in words is "two hundred fifty-seven billion, two hundred sixty-three million, eight hundred ninety-three thousand, seven hundred four".