20518580060160 has 2176 divisors, whose sum is σ = 85683943833600. Its totient is φ = 4161798144000.

The previous prime is 20518580060149. The next prime is 20518580060177. The reversal of 20518580060160 is 6106008581502.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 135884636085 + ... + 135884636235.

Almost surely, 2^{20518580060160} is an apocalyptic number.

20518580060160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20518580060160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42841971916800).

20518580060160 is an abundant number, since it is smaller than the sum of its proper divisors (65165363773440).

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

20518580060160 is an equidigital number, since it uses as much as digits as its factorization.

20518580060160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 42.

The spelling of 20518580060160 in words is "twenty trillion, five hundred eighteen billion, five hundred eighty million, sixty thousand, one hundred sixty".