20055707760 has 80 divisors (see below), whose sum is σ = 67824766080. Its totient is φ = 4861989120.

The previous prime is 20055707743. The next prime is 20055707761. The reversal of 20055707760 is 6770755002.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20055707761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3795790 + ... + 3801069.

It is an arithmetic number, because the mean of its divisors is an integer number (847809576).

Almost surely, 2^20055707760 is an apocalyptic number.

20055707760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20055707760 is an abundant number, since it is smaller than the sum of its proper divisors (47769058320).

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

20055707760 is a wasteful number, since it uses less digits than its factorization.

20055707760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7596886 (or 7596880 counting only the distinct ones).

The product of its (nonzero) digits is 102900, while the sum is 39.

The spelling of 20055707760 in words is "twenty billion, fifty-five million, seven hundred seven thousand, seven hundred sixty".