257142494973888 has 56 divisors (see below), whose sum is σ = 755951316247760. Its totient is φ = 85714164990720.

The previous prime is 257142494973883. The next prime is 257142494973919. The reversal of 257142494973888 is 888379494241752.

257142494973888 is a `hidden beast` number, since 2 + 5 + 7 + 1 + 4 + 2 + 49 + 497 + 3 + 8 + 88 = 666.

It is a super-2 number, since 2×257142494973888² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257142494973883) 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, 74404655383 + ... + 74404658838.

Almost surely, 2^{257142494973888} is an apocalyptic number.

It is an amenable number.

257142494973888 is an abundant number, since it is smaller than the sum of its proper divisors (498808821273872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257142494973888 is a wasteful number, since it uses less digits than its factorization.

257142494973888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148809314242 (or 148809314226 counting only the distinct ones).

The product of its digits is 7803371520, while the sum is 81.

The spelling of 257142494973888 in words is "two hundred fifty-seven trillion, one hundred forty-two billion, four hundred ninety-four million, nine hundred seventy-three thousand, eight hundred eighty-eight".