16303564881 has 48 divisors (see below), whose sum is σ = 24934440960. Its totient is φ = 10244314080.

The previous prime is 16303564867. The next prime is 16303564889. The reversal of 16303564881 is 18846530361.

16303564881 is a `hidden beast` number, since 1 + 6 + 3 + 0 + 3 + 564 + 8 + 81 = 666.

It is not a de Polignac number, because 16303564881 - 2⁶ = 16303564817 is a prime.

It is a super-2 number, since 2×16303564881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16303564889) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15812836 + ... + 15813866.

It is an arithmetic number, because the mean of its divisors is an integer number (519467520).

Almost surely, 2^16303564881 is an apocalyptic number.

It is an amenable number.

16303564881 is a deficient number, since it is larger than the sum of its proper divisors (8630876079).

16303564881 is a wasteful number, since it uses less digits than its factorization.

16303564881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106 (or 2103 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 16303564881 in words is "sixteen billion, three hundred three million, five hundred sixty-four thousand, eight hundred eighty-one".