20139392102 has 8 divisors (see below), whose sum is σ = 30209777112. Its totient is φ = 10069466400.

The previous prime is 20139392101. The next prime is 20139392177. The reversal of 20139392102 is 20129393102.

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

It is a super-2 number, since 2×20139392102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20139392101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32702 + ... + 203342.

It is an arithmetic number, because the mean of its divisors is an integer number (3776222139).

Almost surely, 2^20139392102 is an apocalyptic number.

20139392102 is a deficient number, since it is larger than the sum of its proper divisors (10070385010).

20139392102 is a wasteful number, since it uses less digits than its factorization.

20139392102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229654.

The product of its (nonzero) digits is 5832, while the sum is 32.

The spelling of 20139392102 in words is "twenty billion, one hundred thirty-nine million, three hundred ninety-two thousand, one hundred two".