18940476103516 has 48 divisors (see below), whose sum is σ = 38286587001600. Its totient is φ = 8102773579520.

The previous prime is 18940476103489. The next prime is 18940476103541. The reversal of 18940476103516 is 61530167404981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97291611 + ... + 97486093.

It is an arithmetic number, because the mean of its divisors is an integer number (797637229200).

Almost surely, 2^{18940476103516} is an apocalyptic number.

It is an amenable number.

18940476103516 is an abundant number, since it is smaller than the sum of its proper divisors (19346110898084).

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

18940476103516 is a wasteful number, since it uses less digits than its factorization.

18940476103516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324714 (or 324712 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 18940476103516 in words is "eighteen trillion, nine hundred forty billion, four hundred seventy-six million, one hundred three thousand, five hundred sixteen".