15921628948 has 12 divisors (see below), whose sum is σ = 27867354592. Its totient is φ = 7959527640.

The previous prime is 15921628937. The next prime is 15921628967. The reversal of 15921628948 is 84982612951.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 293598 + ... + 343573.

Almost surely, 2^15921628948 is an apocalyptic number.

It is an amenable number.

15921628948 is a deficient number, since it is larger than the sum of its proper divisors (11945725644).

15921628948 is a wasteful number, since it uses less digits than its factorization.

15921628948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643422 (or 643420 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 55.

The spelling of 15921628948 in words is "fifteen billion, nine hundred twenty-one million, six hundred twenty-eight thousand, nine hundred forty-eight".