20339835057 has 12 divisors (see below), whose sum is σ = 29391366160. Its totient is φ = 13554534168.

The previous prime is 20339835031. The next prime is 20339835071. The reversal of 20339835057 is 75053893302.

20339835057 is a `hidden beast` number, since 20 + 33 + 98 + 3 + 505 + 7 = 666.

It is not a de Polignac number, because 20339835057 - 2⁷ = 20339834929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20339835757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 422203 + ... + 467904.

Almost surely, 2^20339835057 is an apocalyptic number.

It is an amenable number.

20339835057 is a deficient number, since it is larger than the sum of its proper divisors (9051531103).

20339835057 is a wasteful number, since it uses less digits than its factorization.

20339835057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892652 (or 892649 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 20339835057 in words is "twenty billion, three hundred thirty-nine million, eight hundred thirty-five thousand, fifty-seven".