16297256889 has 32 divisors (see below), whose sum is σ = 24911193600. Its totient is φ = 10524833280.

The previous prime is 16297256867. The next prime is 16297256893. The reversal of 16297256889 is 98865279261.

16297256889 is a `hidden beast` number, since 1 + 62 + 9 + 7 + 2 + 568 + 8 + 9 = 666.

It is not a de Polignac number, because 16297256889 - 2⁷ = 16297256761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16297276889) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40969 + ... + 185129.

It is an arithmetic number, because the mean of its divisors is an integer number (778474800).

Almost surely, 2^16297256889 is an apocalyptic number.

It is an amenable number.

16297256889 is a deficient number, since it is larger than the sum of its proper divisors (8613936711).

16297256889 is a wasteful number, since it uses less digits than its factorization.

16297256889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144302 (or 144296 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The spelling of 16297256889 in words is "sixteen billion, two hundred ninety-seven million, two hundred fifty-six thousand, eight hundred eighty-nine".