15398821116 has 48 divisors (see below), whose sum is σ = 45626138880. Its totient is φ = 4399662960.

The previous prime is 15398821049. The next prime is 15398821121. The reversal of 15398821116 is 61112889351.

15398821116 is a `hidden beast` number, since 1 + 539 + 88 + 21 + 1 + 16 = 666.

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, 10183650 + ... + 10185161.

It is an arithmetic number, because the mean of its divisors is an integer number (950544560).

Almost surely, 2^15398821116 is an apocalyptic number.

It is an amenable number.

15398821116 is an abundant number, since it is smaller than the sum of its proper divisors (30227317764).

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

15398821116 is a wasteful number, since it uses less digits than its factorization.

15398821116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20368831 (or 20368823 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The spelling of 15398821116 in words is "fifteen billion, three hundred ninety-eight million, eight hundred twenty-one thousand, one hundred sixteen".