257513499834 has 16 divisors (see below), whose sum is σ = 516015541440. Its totient is φ = 85673076320.

The previous prime is 257513499833. The next prime is 257513499839. The reversal of 257513499834 is 438994315752.

257513499834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (257513499833) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 41185854 + ... + 41192105.

It is an arithmetic number, because the mean of its divisors is an integer number (32250971340).

Almost surely, 2^257513499834 is an apocalyptic number.

257513499834 is an abundant number, since it is smaller than the sum of its proper divisors (258502041606).

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

257513499834 is a wasteful number, since it uses less digits than its factorization.

257513499834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82378485.

The product of its digits is 32659200, while the sum is 60.

The spelling of 257513499834 in words is "two hundred fifty-seven billion, five hundred thirteen million, four hundred ninety-nine thousand, eight hundred thirty-four".