18244286778700 has 36 divisors (see below), whose sum is σ = 39592982692480. Its totient is φ = 7297183765440.

The previous prime is 18244286778671. The next prime is 18244286778721. The reversal of 18244286778700 is 787768244281.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5254047 + ... + 8005846.

Almost surely, 2^{18244286778700} is an apocalyptic number.

18244286778700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18244286778700 is an abundant number, since it is smaller than the sum of its proper divisors (21348695913780).

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

18244286778700 is a wasteful number, since it uses less digits than its factorization.

18244286778700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13273666 (or 13273659 counting only the distinct ones).

The product of its (nonzero) digits is 67436544, while the sum is 64.

The spelling of 18244286778700 in words is "eighteen trillion, two hundred forty-four billion, two hundred eighty-six million, seven hundred seventy-eight thousand, seven hundred".