20139412032 has 168 divisors, whose sum is σ = 61685652600. Its totient is φ = 6259949568.

The previous prime is 20139412003. The next prime is 20139412039. The reversal of 20139412032 is 23021493102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13543373376 + 6596038656 = 116376^2 + 81216^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20139411987 and 20139412005.

It is not an unprimeable number, because it can be changed into a prime (20139412039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1057894 + ... + 1076762.

Almost surely, 2^20139412032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20139412032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30842826300).

20139412032 is an abundant number, since it is smaller than the sum of its proper divisors (41546240568).

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

20139412032 is a wasteful number, since it uses less digits than its factorization.

20139412032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19013 (or 19000 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 20139412032 in words is "twenty billion, one hundred thirty-nine million, four hundred twelve thousand, thirty-two".