18700037221700 has 18 divisors (see below), whose sum is σ = 40579080771306. Its totient is φ = 7480014888640.

The previous prime is 18700037221643. The next prime is 18700037221709. The reversal of 18700037221700 is 712273000781.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2077847292676 + 16622189929024 = 1441474^2 + 4077032^2 .

It is not an unprimeable number, because it can be changed into a prime (18700037221709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93500186009 + ... + 93500186208.

Almost surely, 2^{18700037221700} is an apocalyptic number.

18700037221700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18700037221700 is an abundant number, since it is smaller than the sum of its proper divisors (21879043549606).

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

18700037221700 is a wasteful number, since it uses less digits than its factorization.

18700037221700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187000372231 (or 187000372224 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The spelling of 18700037221700 in words is "eighteen trillion, seven hundred billion, thirty-seven million, two hundred twenty-one thousand, seven hundred".