18871005034416 has 80 divisors (see below), whose sum is σ = 49058144229600. Its totient is φ = 6250665867264.

The previous prime is 18871005034369. The next prime is 18871005034421. The reversal of 18871005034416 is 61443050017881.

It is a super-2 number, since 2×18871005034416² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 6416490 + ... + 8883318.

It is an arithmetic number, because the mean of its divisors is an integer number (613226802870).

Almost surely, 2^{18871005034416} is an apocalyptic number.

18871005034416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18871005034416 is an abundant number, since it is smaller than the sum of its proper divisors (30187139195184).

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

18871005034416 is a wasteful number, since it uses less digits than its factorization.

18871005034416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467846 (or 2467840 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 18871005034416 in words is "eighteen trillion, eight hundred seventy-one billion, five million, thirty-four thousand, four hundred sixteen".