15321600000 has 936 divisors, whose sum is σ = 66547615680. Its totient is φ = 3317760000.

The previous prime is 15321599987. The next prime is 15321600023. The reversal of 15321600000 is 612351.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 806399991 + ... + 806400009.

It is an arithmetic number, because the mean of its divisors is an integer number (71097880).

Almost surely, 2^15321600000 is an apocalyptic number.

15321600000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15321600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33273807840).

15321600000 is an abundant number, since it is smaller than the sum of its proper divisors (51226015680).

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

15321600000 is an frugal number, since it uses more digits than its factorization.

15321600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The spelling of 15321600000 in words is "fifteen billion, three hundred twenty-one million, six hundred thousand".