13989121628 has 48 divisors (see below), whose sum is σ = 25667862528. Its totient is φ = 6663384000.

The previous prime is 13989121613. The next prime is 13989121633. The reversal of 13989121628 is 82612198931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2059598 + ... + 2066378.

It is an arithmetic number, because the mean of its divisors is an integer number (534747136).

Almost surely, 2^13989121628 is an apocalyptic number.

It is an amenable number.

13989121628 is a deficient number, since it is larger than the sum of its proper divisors (11678740900).

13989121628 is a wasteful number, since it uses less digits than its factorization.

13989121628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7074 (or 7072 counting only the distinct ones).

The product of its digits is 373248, while the sum is 50.

The spelling of 13989121628 in words is "thirteen billion, nine hundred eighty-nine million, one hundred twenty-one thousand, six hundred twenty-eight".