257803371940 has 24 divisors (see below), whose sum is σ = 541396860480. Its totient is φ = 103119486048.

The previous prime is 257803371923. The next prime is 257803371941. The reversal of 257803371940 is 49173308752.

It is not an unprimeable number, because it can be changed into a prime (257803371941) 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, 1742089 + ... + 1884271.

It is an arithmetic number, because the mean of its divisors is an integer number (22558202520).

Almost surely, 2^257803371940 is an apocalyptic number.

257803371940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

257803371940 is an abundant number, since it is smaller than the sum of its proper divisors (283593488540).

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

257803371940 is a wasteful number, since it uses less digits than its factorization.

257803371940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232851 (or 232849 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 257803371940 in words is "two hundred fifty-seven billion, eight hundred three million, three hundred seventy-one thousand, nine hundred forty".