18851716702020 has 24 divisors (see below), whose sum is σ = 52784806765824. Its totient is φ = 5027124453856.

The previous prime is 18851716702019. The next prime is 18851716702031. The reversal of 18851716702020 is 2020761715881.

It is a super-2 number, since 2×18851716702020² (a number of 27 digits) contains 22 as substring.

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, 157097639124 + ... + 157097639243.

It is an arithmetic number, because the mean of its divisors is an integer number (2199366948576).

Almost surely, 2^{18851716702020} is an apocalyptic number.

18851716702020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18851716702020 is an abundant number, since it is smaller than the sum of its proper divisors (33933090063804).

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

18851716702020 is a wasteful number, since it uses less digits than its factorization.

18851716702020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314195278379 (or 314195278377 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 48.

The spelling of 18851716702020 in words is "eighteen trillion, eight hundred fifty-one billion, seven hundred sixteen million, seven hundred two thousand, twenty".