16256538576 has 60 divisors (see below), whose sum is σ = 45510620740. Its totient is φ = 5417072640.

The previous prime is 16256538547. The next prime is 16256538583. The reversal of 16256538576 is 67583565261.

It is a happy number.

16256538576 is a `hidden beast` number, since 1 + 6 + 2 + 5 + 65 + 3 + 8 + 576 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14683622976 + 1572915600 = 121176^2 + 39660^2 .

It is a super-2 number, since 2×16256538576² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 467190 + ... + 500778.

Almost surely, 2^16256538576 is an apocalyptic number.

16256538576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16256538576 is an abundant number, since it is smaller than the sum of its proper divisors (29254082164).

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

16256538576 is a wasteful number, since it uses less digits than its factorization.

16256538576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36964 (or 36955 counting only the distinct ones).

The product of its digits is 9072000, while the sum is 54.

The spelling of 16256538576 in words is "sixteen billion, two hundred fifty-six million, five hundred thirty-eight thousand, five hundred seventy-six".