18487260020928 has 224 divisors, whose sum is σ = 55207492531200. Its totient is φ = 5425111351296.

The previous prime is 18487260020777. The next prime is 18487260020941. The reversal of 18487260020928 is 82902006278481.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3012526 + ... + 6786002.

Almost surely, 2^{18487260020928} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18487260020928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27603746265600).

18487260020928 is an abundant number, since it is smaller than the sum of its proper divisors (36720232510272).

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

18487260020928 is a wasteful number, since it uses less digits than its factorization.

18487260020928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773607 (or 3773597 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 18487260020928 in words is "eighteen trillion, four hundred eighty-seven billion, two hundred sixty million, twenty thousand, nine hundred twenty-eight".