15497213816 has 32 divisors (see below), whose sum is σ = 33213180000. Its totient is φ = 6640690176.

The previous prime is 15497213801. The next prime is 15497213839. The reversal of 15497213816 is 61831279451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470660 + ... + 502508.

It is an arithmetic number, because the mean of its divisors is an integer number (1037911875).

Almost surely, 2^15497213816 is an apocalyptic number.

It is an amenable number.

15497213816 is an abundant number, since it is smaller than the sum of its proper divisors (17715966184).

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

15497213816 is a wasteful number, since it uses less digits than its factorization.

15497213816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40551 (or 40547 counting only the distinct ones).

The product of its digits is 362880, while the sum is 47.

The spelling of 15497213816 in words is "fifteen billion, four hundred ninety-seven million, two hundred thirteen thousand, eight hundred sixteen".