16181972154496 has 32 divisors (see below), whose sum is σ = 32256908236800. Its totient is φ = 8086120675584.

The previous prime is 16181972154433. The next prime is 16181972154521. The reversal of 16181972154496 is 69445127918161.

16181972154496 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37797256 + ... + 38222983.

It is an arithmetic number, because the mean of its divisors is an integer number (1008028382400).

Almost surely, 2^{16181972154496} is an apocalyptic number.

16181972154496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16181972154496 is a deficient number, since it is larger than the sum of its proper divisors (16074936082304).

16181972154496 is an equidigital number, since it uses as much as digits as its factorization.

16181972154496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76021916 (or 76021904 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 64.

The spelling of 16181972154496 in words is "sixteen trillion, one hundred eighty-one billion, nine hundred seventy-two million, one hundred fifty-four thousand, four hundred ninety-six".