16633021512 has 16 divisors (see below), whose sum is σ = 41582553840. Its totient is φ = 5544340496.

The previous prime is 16633021507. The next prime is 16633021513. The reversal of 16633021512 is 21512033661.

It is a super-2 number, since 2×16633021512² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16633021512.

It is not an unprimeable number, because it can be changed into a prime (16633021513) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 346521258 + ... + 346521305.

It is an arithmetic number, because the mean of its divisors is an integer number (2598909615).

Almost surely, 2^16633021512 is an apocalyptic number.

16633021512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16633021512 is an abundant number, since it is smaller than the sum of its proper divisors (24949532328).

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

16633021512 is a wasteful number, since it uses less digits than its factorization.

16633021512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693042572 (or 693042568 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 16633021512 in words is "sixteen billion, six hundred thirty-three million, twenty-one thousand, five hundred twelve".