257442884747650 has 48 divisors (see below), whose sum is σ = 547338331336896. Its totient is φ = 88251887805120.

The previous prime is 257442884747621. The next prime is 257442884747677. The reversal of 257442884747650 is 56747488244752.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57178404 + ... + 61516303.

It is an arithmetic number, because the mean of its divisors is an integer number (11402881902852).

Almost surely, 2^{257442884747650} is an apocalyptic number.

257442884747650 is an abundant number, since it is smaller than the sum of its proper divisors (289895446589246).

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

257442884747650 is a wasteful number, since it uses less digits than its factorization.

257442884747650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118700923 (or 118700918 counting only the distinct ones).

The product of its (nonzero) digits is 3371827200, while the sum is 73.

The spelling of 257442884747650 in words is "two hundred fifty-seven trillion, four hundred forty-two billion, eight hundred eighty-four million, seven hundred forty-seven thousand, six hundred fifty".