15982216898 has 6 divisors (see below), whose sum is σ = 23973593529. Its totient is φ = 7991019056.

The previous prime is 15982216853. The next prime is 15982216927. The reversal of 15982216898 is 89861228951.

15982216898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13559903809 + 2422313089 = 116447^2 + 49217^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=89393.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 134090 + ... + 223482.

Almost surely, 2^15982216898 is an apocalyptic number.

15982216898 is a deficient number, since it is larger than the sum of its proper divisors (7991376631).

15982216898 is an frugal number, since it uses more digits than its factorization.

15982216898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178788 (or 89395 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 59.

The spelling of 15982216898 in words is "fifteen billion, nine hundred eighty-two million, two hundred sixteen thousand, eight hundred ninety-eight".