15321713100 has 72 divisors (see below), whose sum is σ = 44346619968. Its totient is φ = 4084334400.

The previous prime is 15321713083. The next prime is 15321713117. The reversal of 15321713100 is 131712351.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (15321713083) and next prime (15321713117).

It is a super-2 number, since 2×15321713100² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1032735 + ... + 1047465.

Almost surely, 2^15321713100 is an apocalyptic number.

15321713100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15321713100 is an abundant number, since it is smaller than the sum of its proper divisors (29024906868).

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

15321713100 is a wasteful number, since it uses less digits than its factorization.

15321713100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18215 (or 18208 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 24.

The spelling of 15321713100 in words is "fifteen billion, three hundred twenty-one million, seven hundred thirteen thousand, one hundred".