20107055620 has 12 divisors (see below), whose sum is σ = 42224816844. Its totient is φ = 8042822240.

The previous prime is 20107055593. The next prime is 20107055641. The reversal of 20107055620 is 2655070102.

It can be written as a sum of positive squares in 2 ways, for example, as 2403156484 + 17703899136 = 49022^2 + 133056^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502676371 + ... + 502676410.

It is an arithmetic number, because the mean of its divisors is an integer number (3518734737).

Almost surely, 2^20107055620 is an apocalyptic number.

20107055620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20107055620 is an abundant number, since it is smaller than the sum of its proper divisors (22117761224).

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

20107055620 is a wasteful number, since it uses less digits than its factorization.

20107055620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005352790 (or 1005352788 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The spelling of 20107055620 in words is "twenty billion, one hundred seven million, fifty-five thousand, six hundred twenty".