20927959920 has 120 divisors (see below), whose sum is σ = 80323522656. Its totient is φ = 4783532544.

The previous prime is 20927959907. The next prime is 20927959933. The reversal of 20927959920 is 2995972902.

20927959920 is a `hidden beast` number, since 2 + 0 + 9 + 27 + 9 + 599 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (20927959907) and next prime (20927959933).

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2071147 + ... + 2081226.

Almost surely, 2^20927959920 is an apocalyptic number.

20927959920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20927959920 is an abundant number, since it is smaller than the sum of its proper divisors (59395562736).

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

20927959920 is a wasteful number, since it uses less digits than its factorization.

20927959920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4152399 (or 4152390 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The spelling of 20927959920 in words is "twenty billion, nine hundred twenty-seven million, nine hundred fifty-nine thousand, nine hundred twenty".