20707405320 has 64 divisors (see below), whose sum is σ = 70996821120. Its totient is φ = 4733121024.

The previous prime is 20707405319. The next prime is 20707405337. The reversal of 20707405320 is 2350470702.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12324997 + ... + 12326676.

It is an arithmetic number, because the mean of its divisors is an integer number (1109325330).

Almost surely, 2^20707405320 is an apocalyptic number.

20707405320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20707405320 is an abundant number, since it is smaller than the sum of its proper divisors (50289415800).

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

20707405320 is a wasteful number, since it uses less digits than its factorization.

20707405320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24651694 (or 24651690 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The spelling of 20707405320 in words is "twenty billion, seven hundred seven million, four hundred five thousand, three hundred twenty".