638231713872373 has 8 divisors (see below), whose sum is σ = 644205011924160. Its totient is φ = 632258573518560.

The previous prime is 638231713872367. The next prime is 638231713872421. The reversal of 638231713872373 is 373278317132836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 638231713872373 - 2²⁹ = 638231177001461 is a prime.

It is a super-2 number, since 2×638231713872373² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (638231711872373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31284433 + ... + 47488726.

It is an arithmetic number, because the mean of its divisors is an integer number (80525626490520).

Almost surely, 2^{638231713872373} is an apocalyptic number.

It is an amenable number.

638231713872373 is a deficient number, since it is larger than the sum of its proper divisors (5973298051787).

638231713872373 is a wasteful number, since it uses less digits than its factorization.

638231713872373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78848987.

The product of its digits is 128024064, while the sum is 64.

The spelling of 638231713872373 in words is "six hundred thirty-eight trillion, two hundred thirty-one billion, seven hundred thirteen million, eight hundred seventy-two thousand, three hundred seventy-three".