15952320921600 has 2052 divisors, whose sum is σ = 69096136050864. Its totient is φ = 3577447710720.

The previous prime is 15952320921599. The next prime is 15952320921611. The reversal of 15952320921600 is 612902325951.

15952320921600 is a `hidden beast` number, since 1 + 5 + 9 + 5 + 2 + 32 + 0 + 9 + 2 + 1 + 600 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 107 ways as a sum of consecutive naturals, for example, 300987187174 + ... + 300987187226.

Almost surely, 2^{15952320921600} is an apocalyptic number.

15952320921600 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 15952320921600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34548068025432).

15952320921600 is an abundant number, since it is smaller than the sum of its proper divisors (53143815129264).

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

15952320921600 is an frugal number, since it uses more digits than its factorization.

15952320921600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 15952320921600 in words is "fifteen trillion, nine hundred fifty-two billion, three hundred twenty million, nine hundred twenty-one thousand, six hundred".