18628783311582 has 64 divisors (see below), whose sum is σ = 43726476625920. Its totient is φ = 5869534104000.

The previous prime is 18628783311571. The next prime is 18628783311601. The reversal of 18628783311582 is 28511338782681.

18628783311582 is a `hidden beast` number, since 1 + 8 + 6 + 2 + 8 + 7 + 8 + 33 + 11 + 582 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 129326919 + ... + 129470882.

It is an arithmetic number, because the mean of its divisors is an integer number (683226197280).

Almost surely, 2^{18628783311582} is an apocalyptic number.

18628783311582 is an abundant number, since it is smaller than the sum of its proper divisors (25097693314338).

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

18628783311582 is a wasteful number, since it uses less digits than its factorization.

18628783311582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258797886 (or 258797880 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The spelling of 18628783311582 in words is "eighteen trillion, six hundred twenty-eight billion, seven hundred eighty-three million, three hundred eleven thousand, five hundred eighty-two".