638116704310 has 16 divisors (see below), whose sum is σ = 1149454037952. Its totient is φ = 255059132800.

The previous prime is 638116704293. The next prime is 638116704343. The reversal of 638116704310 is 13407611836.

It is a super-2 number, since 2×638116704310² (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, 23429326 + ... + 23456545.

It is an arithmetic number, because the mean of its divisors is an integer number (71840877372).

Almost surely, 2^638116704310 is an apocalyptic number.

638116704310 is a deficient number, since it is larger than the sum of its proper divisors (511337333642).

638116704310 is a wasteful number, since it uses less digits than its factorization.

638116704310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46887239.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 638116704310 in words is "six hundred thirty-eight billion, one hundred sixteen million, seven hundred four thousand, three hundred ten".