16514121812 has 12 divisors (see below), whose sum is σ = 29444991156. Its totient is φ = 8101267200.

The previous prime is 16514121803. The next prime is 16514121821. The reversal of 16514121812 is 21812141561.

It is an interprime number because it is at equal distance from previous prime (16514121803) and next prime (16514121821).

It can be written as a sum of positive squares in 2 ways, for example, as 8494202896 + 8019918916 = 92164^2 + 89554^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38948189 + ... + 38948612.

It is an arithmetic number, because the mean of its divisors is an integer number (2453749263).

Almost surely, 2^16514121812 is an apocalyptic number.

It is an amenable number.

16514121812 is a deficient number, since it is larger than the sum of its proper divisors (12930869344).

16514121812 is a wasteful number, since it uses less digits than its factorization.

16514121812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77896858 (or 77896856 counting only the distinct ones).

The product of its digits is 3840, while the sum is 32.

The spelling of 16514121812 in words is "sixteen billion, five hundred fourteen million, one hundred twenty-one thousand, eight hundred twelve".