20139392104 has 32 divisors (see below), whose sum is σ = 40679100000. Its totient is φ = 9292128192.

The previous prime is 20139392101. The next prime is 20139392177. The reversal of 20139392104 is 40129393102.

It is a super-2 number, since 2×20139392104² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20139392104.

It is not an unprimeable number, because it can be changed into a prime (20139392101) 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, 313747 + ... + 372445.

It is an arithmetic number, because the mean of its divisors is an integer number (1271221875).

Almost surely, 2^20139392104 is an apocalyptic number.

It is an amenable number.

20139392104 is an abundant number, since it is smaller than the sum of its proper divisors (20539707896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20139392104 is a wasteful number, since it uses less digits than its factorization.

20139392104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62017 (or 62013 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The spelling of 20139392104 in words is "twenty billion, one hundred thirty-nine million, three hundred ninety-two thousand, one hundred four".