18880073646372 has 72 divisors (see below), whose sum is σ = 48262222827000. Its totient is φ = 6222470588928.

The previous prime is 18880073646349. The next prime is 18880073646377. The reversal of 18880073646372 is 27364637008881.

18880073646372 is a `hidden beast` number, since 1 + 88 + 80 + 0 + 73 + 6 + 46 + 372 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17868738276 + 18862204908096 = 133674^2 + 4343064^2 .

It is not an unprimeable number, because it can be changed into a prime (18880073646377) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 164464818 + ... + 164579574.

It is an arithmetic number, because the mean of its divisors is an integer number (670308650375).

Almost surely, 2^{18880073646372} is an apocalyptic number.

18880073646372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18880073646372 is an abundant number, since it is smaller than the sum of its proper divisors (29382149180628).

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

18880073646372 is a wasteful number, since it uses less digits than its factorization.

18880073646372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166205 (or 166200 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 18880073646372 in words is "eighteen trillion, eight hundred eighty billion, seventy-three million, six hundred forty-six thousand, three hundred seventy-two".