16292224881 has 27 divisors (see below), whose sum is σ = 23771779083. Its totient is φ = 10752477840.

The previous prime is 16292224867. The next prime is 16292224903. The reversal of 16292224881 is 18842229261.

The square root of 16292224881 is 127641.

It is a perfect power (a square), and thus also a powerful number.

16292224881 is a `hidden beast` number, since 1 + 62 + 92 + 22 + 488 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4775501025 + 11516723856 = 69105^2 + 107316^2 .

It is not a de Polignac number, because 16292224881 - 2⁹ = 16292224369 is a prime.

It is a super-2 number, since 2×16292224881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16292224801) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 60118776 + ... + 60119046.

Almost surely, 2^16292224881 is an apocalyptic number.

16292224881 is the 127641-st square number.

16292224881 is the 63821-st centered octagonal number.

It is an amenable number.

16292224881 is a deficient number, since it is larger than the sum of its proper divisors (7479554202).

16292224881 is an frugal number, since it uses more digits than its factorization.

16292224881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862 (or 431 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The spelling of 16292224881 in words is "sixteen billion, two hundred ninety-two million, two hundred twenty-four thousand, eight hundred eighty-one".