257358433667916 has 96 divisors (see below), whose sum is σ = 722502803151360. Its totient is φ = 69651945667584.

The previous prime is 257358433667911. The next prime is 257358433667941. The reversal of 257358433667916 is 619766334853752.

It is not an unprimeable number, because it can be changed into a prime (257358433667911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1986196 + ... + 22774148.

It is an arithmetic number, because the mean of its divisors is an integer number (7526070866160).

Almost surely, 2^{257358433667916} is an apocalyptic number.

It is an amenable number.

257358433667916 is an abundant number, since it is smaller than the sum of its proper divisors (465144369483444).

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

257358433667916 is a wasteful number, since it uses less digits than its factorization.

257358433667916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20795743 (or 20795741 counting only the distinct ones).

The product of its digits is 4115059200, while the sum is 75.

The spelling of 257358433667916 in words is "two hundred fifty-seven trillion, three hundred fifty-eight billion, four hundred thirty-three million, six hundred sixty-seven thousand, nine hundred sixteen".