15674734621 has 48 divisors (see below), whose sum is σ = 20847383424. Its totient is φ = 11497254912.

The previous prime is 15674734613. The next prime is 15674734633. The reversal of 15674734621 is 12643747651.

15674734621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 15674734621 - 2³ = 15674734613 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15674734601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1341621 + ... + 1353253.

It is an arithmetic number, because the mean of its divisors is an integer number (434320488).

Almost surely, 2^15674734621 is an apocalyptic number.

It is an amenable number.

15674734621 is a deficient number, since it is larger than the sum of its proper divisors (5172648803).

15674734621 is a wasteful number, since it uses less digits than its factorization.

15674734621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11750 (or 11737 counting only the distinct ones).

The product of its digits is 846720, while the sum is 46.

The spelling of 15674734621 in words is "fifteen billion, six hundred seventy-four million, seven hundred thirty-four thousand, six hundred twenty-one".