15996346800 has 240 divisors, whose sum is σ = 59991493632. Its totient is φ = 3567052800.

The previous prime is 15996346777. The next prime is 15996346853. The reversal of 15996346800 is 864369951.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×15996346800² (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 47 ways as a sum of consecutive naturals, for example, 321177 + ... + 367623.

Almost surely, 2^15996346800 is an apocalyptic number.

15996346800 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 15996346800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29995746816).

15996346800 is an abundant number, since it is smaller than the sum of its proper divisors (43995146832).

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

15996346800 is a wasteful number, since it uses less digits than its factorization.

15996346800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46516 (or 46505 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 15996346800 in words is "fifteen billion, nine hundred ninety-six million, three hundred forty-six thousand, eight hundred".