257807162040 has 64 divisors (see below), whose sum is σ = 773482793760. Its totient is φ = 68743127040.

The previous prime is 257807162033. The next prime is 257807162141. The reversal of 257807162040 is 40261708752.

It is a junction number, because it is equal to n+sod(n) for n = 257807161983 and 257807162001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1568232 + ... + 1724808.

Almost surely, 2^257807162040 is an apocalyptic number.

257807162040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257807162040 is an abundant number, since it is smaller than the sum of its proper divisors (515675631720).

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

257807162040 is a wasteful number, since it uses less digits than its factorization.

257807162040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170312 (or 170308 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

The spelling of 257807162040 in words is "two hundred fifty-seven billion, eight hundred seven million, one hundred sixty-two thousand, forty".