16615332612 has 36 divisors (see below), whose sum is σ = 42976613680. Its totient is φ = 5409642672.

The previous prime is 16615332607. The next prime is 16615332623. The reversal of 16615332612 is 21623351661.

16615332612 is a `hidden beast` number, since 1 + 6 + 6 + 1 + 5 + 3 + 32 + 612 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5365162 + ... + 5368257.

Almost surely, 2^16615332612 is an apocalyptic number.

16615332612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16615332612 is an abundant number, since it is smaller than the sum of its proper divisors (26361281068).

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

16615332612 is a wasteful number, since it uses less digits than its factorization.

16615332612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10733472 (or 10733467 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

It can be divided in two parts, 166153 and 32612, that added together give a triangular number (198765 = T₆₃₀).

The spelling of 16615332612 in words is "sixteen billion, six hundred fifteen million, three hundred thirty-two thousand, six hundred twelve".