18995580916212 has 48 divisors (see below), whose sum is σ = 46279969142400. Its totient is φ = 6052651913088.

The previous prime is 18995580916187. The next prime is 18995580916219. The reversal of 18995580916212 is 21261908559981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18995580916219) 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, 21788283 + ... + 22643330.

It is an arithmetic number, because the mean of its divisors is an integer number (964166023800).

Almost surely, 2^{18995580916212} is an apocalyptic number.

18995580916212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18995580916212 is an abundant number, since it is smaller than the sum of its proper divisors (27284388226188).

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

18995580916212 is a wasteful number, since it uses less digits than its factorization.

18995580916212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44433192 (or 44433190 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 66.

The spelling of 18995580916212 in words is "eighteen trillion, nine hundred ninety-five billion, five hundred eighty million, nine hundred sixteen thousand, two hundred twelve".