257434948630 has 16 divisors (see below), whose sum is σ = 465460861824. Its totient is φ = 102512211840.

The previous prime is 257434948627. The next prime is 257434948649. The reversal of 257434948630 is 36849434752.

It is a super-2 number, since 2×257434948630² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57718611 + ... + 57723070.

It is an arithmetic number, because the mean of its divisors is an integer number (29091303864).

Almost surely, 2^257434948630 is an apocalyptic number.

257434948630 is a deficient number, since it is larger than the sum of its proper divisors (208025913194).

257434948630 is a wasteful number, since it uses less digits than its factorization.

257434948630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115441911.

The product of its (nonzero) digits is 17418240, while the sum is 55.

The spelling of 257434948630 in words is "two hundred fifty-seven billion, four hundred thirty-four million, nine hundred forty-eight thousand, six hundred thirty".