18010857601944 has 64 divisors (see below), whose sum is σ = 50034872448000. Its totient is φ = 6003053707680.

The previous prime is 18010857601939. The next prime is 18010857601987. The reversal of 18010857601944 is 44910675801081.

18010857601944 is a `hidden beast` number, since 1 + 8 + 0 + 10 + 8 + 576 + 0 + 19 + 44 = 666.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1625424 + ... + 6218015.

It is an arithmetic number, because the mean of its divisors is an integer number (781794882000).

Almost surely, 2^{18010857601944} is an apocalyptic number.

It is an amenable number.

18010857601944 is an abundant number, since it is smaller than the sum of its proper divisors (32024014846056).

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

18010857601944 is a wasteful number, since it uses less digits than its factorization.

18010857601944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7854085 (or 7854075 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 18010857601944 in words is "eighteen trillion, ten billion, eight hundred fifty-seven million, six hundred one thousand, nine hundred forty-four".