16396511793920 has 144 divisors (see below), whose sum is σ = 41595292730880. Its totient is φ = 6171284078592.

The previous prime is 16396511793889. The next prime is 16396511793941. The reversal of 16396511793920 is 2939711569361.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90278561 + ... + 90459999.

It is an arithmetic number, because the mean of its divisors is an integer number (288856199520).

Almost surely, 2^{16396511793920} is an apocalyptic number.

16396511793920 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 16396511793920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20797646365440).

16396511793920 is an abundant number, since it is smaller than the sum of its proper divisors (25198780936960).

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

16396511793920 is a wasteful number, since it uses less digits than its factorization.

16396511793920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185630 (or 185616 counting only the distinct ones).

The product of its (nonzero) digits is 16533720, while the sum is 62.

The spelling of 16396511793920 in words is "sixteen trillion, three hundred ninety-six billion, five hundred eleven million, seven hundred ninety-three thousand, nine hundred twenty".