16731612072 has 80 divisors (see below), whose sum is σ = 53558878560. Its totient is φ = 4780459296.

The previous prime is 16731612067. The next prime is 16731612169. The reversal of 16731612072 is 27021613761.

It is a happy number.

16731612072 is a `hidden beast` number, since 1 + 6 + 7 + 31 + 612 + 0 + 7 + 2 = 666.

It is a super-2 number, since 2×16731612072² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1839778 + ... + 1848849.

It is an arithmetic number, because the mean of its divisors is an integer number (669485982).

Almost surely, 2^16731612072 is an apocalyptic number.

16731612072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16731612072 is an abundant number, since it is smaller than the sum of its proper divisors (36827266488).

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

16731612072 is a wasteful number, since it uses less digits than its factorization.

16731612072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688652 (or 3688639 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The spelling of 16731612072 in words is "sixteen billion, seven hundred thirty-one million, six hundred twelve thousand, seventy-two".