16045663992 has 64 divisors (see below), whose sum is σ = 40985948160. Its totient is φ = 5233238400.

The previous prime is 16045663969. The next prime is 16045664017. The reversal of 16045663992 is 29936654061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250933 + ... + 308315.

It is an arithmetic number, because the mean of its divisors is an integer number (640405440).

Almost surely, 2^16045663992 is an apocalyptic number.

16045663992 is a gapful number since it is divisible by the number (12) 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 16045663992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20492974080).

16045663992 is an abundant number, since it is smaller than the sum of its proper divisors (24940284168).

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

16045663992 is a wasteful number, since it uses less digits than its factorization.

16045663992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57644 (or 57640 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 16045663992 in words is "sixteen billion, forty-five million, six hundred sixty-three thousand, nine hundred ninety-two".