16459920532881 has 48 divisors (see below), whose sum is σ = 28368447137280. Its totient is φ = 9404957913120.

The previous prime is 16459920532871. The next prime is 16459920532901. The reversal of 16459920532881 is 18823502995461.

16459920532881 is a `hidden beast` number, since 1 + 6 + 4 + 5 + 9 + 92 + 0 + 532 + 8 + 8 + 1 = 666.

It is not a de Polignac number, because 16459920532881 - 2⁶ = 16459920532817 is a prime.

It is a super-2 number, since 2×16459920532881² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (16459920532871) 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, 17292480 + ... + 18219486.

It is an arithmetic number, because the mean of its divisors is an integer number (591009315360).

Almost surely, 2^{16459920532881} is an apocalyptic number.

It is an amenable number.

16459920532881 is a deficient number, since it is larger than the sum of its proper divisors (11908526604399).

16459920532881 is a wasteful number, since it uses less digits than its factorization.

16459920532881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940451 (or 940438 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 63.

The spelling of 16459920532881 in words is "sixteen trillion, four hundred fifty-nine billion, nine hundred twenty million, five hundred thirty-two thousand, eight hundred eighty-one".