18208849287744 has 224 divisors, whose sum is σ = 57396975782400. Its totient is φ = 5640268308480.

The previous prime is 18208849287731. The next prime is 18208849287767. The reversal of 18208849287744 is 44778294880281.

18208849287744 is a `hidden beast` number, since 1 + 8 + 20 + 8 + 8 + 492 + 8 + 77 + 44 = 666.

It is a super-2 number, since 2×18208849287744² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1602427 + ... + 6243834.

Almost surely, 2^{18208849287744} is an apocalyptic number.

It is an amenable number.

18208849287744 is an abundant number, since it is smaller than the sum of its proper divisors (39188126494656).

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

18208849287744 is a wasteful number, since it uses less digits than its factorization.

18208849287744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846378 (or 7846362 counting only the distinct ones).

The product of its (nonzero) digits is 462422016, while the sum is 72.

The spelling of 18208849287744 in words is "eighteen trillion, two hundred eight billion, eight hundred forty-nine million, two hundred eighty-seven thousand, seven hundred forty-four".