257917064090 has 16 divisors (see below), whose sum is σ = 530572246272. Its totient is φ = 88428707664.

The previous prime is 257917064063. The next prime is 257917064113. The reversal of 257917064090 is 90460719752.

It is a super-3 number, since 3×257917064090³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1842264674 + ... + 1842264813.

It is an arithmetic number, because the mean of its divisors is an integer number (33160765392).

Almost surely, 2^257917064090 is an apocalyptic number.

257917064090 is an abundant number, since it is smaller than the sum of its proper divisors (272655182182).

257917064090 is a wasteful number, since it uses less digits than its factorization.

257917064090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3684529501.

The product of its (nonzero) digits is 952560, while the sum is 50.

The spelling of 257917064090 in words is "two hundred fifty-seven billion, nine hundred seventeen million, sixty-four thousand, ninety".