20055661260160 has 64 divisors (see below), whose sum is σ = 49114969293600. Its totient is φ = 7826599505920.

The previous prime is 20055661260143. The next prime is 20055661260179. The reversal of 20055661260160 is 6106216655002.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382131940 + ... + 382184419.

Almost surely, 2^{20055661260160} is an apocalyptic number.

20055661260160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20055661260160 is an abundant number, since it is smaller than the sum of its proper divisors (29059308033440).

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

20055661260160 is an equidigital number, since it uses as much as digits as its factorization.

20055661260160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764316419 (or 764316407 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 20055661260160 in words is "twenty trillion, fifty-five billion, six hundred sixty-one million, two hundred sixty thousand, one hundred sixty".