20439196392 has 32 divisors (see below), whose sum is σ = 51112666080. Its totient is φ = 6811108800.

The previous prime is 20439196387. The next prime is 20439196417. The reversal of 20439196392 is 29369193402.

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, 35734 + ... + 205317.

It is an arithmetic number, because the mean of its divisors is an integer number (1597270815).

Almost surely, 2^20439196392 is an apocalyptic number.

It is an amenable number.

20439196392 is an abundant number, since it is smaller than the sum of its proper divisors (30673469688).

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

20439196392 is a wasteful number, since it uses less digits than its factorization.

20439196392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244593 (or 244589 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 48.

The spelling of 20439196392 in words is "twenty billion, four hundred thirty-nine million, one hundred ninety-six thousand, three hundred ninety-two".