634076432638 has 32 divisors (see below), whose sum is σ = 1040388680448. Its totient is φ = 287437248000.

The previous prime is 634076432621. The next prime is 634076432653. The reversal of 634076432638 is 836234670436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13317631 + ... + 13365157.

It is an arithmetic number, because the mean of its divisors is an integer number (32512146264).

Almost surely, 2^634076432638 is an apocalyptic number.

634076432638 is a deficient number, since it is larger than the sum of its proper divisors (406312247810).

634076432638 is a wasteful number, since it uses less digits than its factorization.

634076432638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49168.

The product of its (nonzero) digits is 10450944, while the sum is 52.

The spelling of 634076432638 in words is "six hundred thirty-four billion, seventy-six million, four hundred thirty-two thousand, six hundred thirty-eight".