28160881315 has 16 divisors (see below), whose sum is σ = 38627463168. Its totient is φ = 19306905696.

The previous prime is 28160881303. The next prime is 28160881351. The reversal of 28160881315 is 51318806182.

It is a cyclic number.

It is not a de Polignac number, because 28160881315 - 2²¹ = 28158784163 is a prime.

It is a super-2 number, since 2×28160881315² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138454 + ... + 274756.

It is an arithmetic number, because the mean of its divisors is an integer number (2414216448).

Almost surely, 2^28160881315 is an apocalyptic number.

28160881315 is a deficient number, since it is larger than the sum of its proper divisors (10466581853).

28160881315 is a wasteful number, since it uses less digits than its factorization.

28160881315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142218.

The product of its (nonzero) digits is 92160, while the sum is 43.

The spelling of 28160881315 in words is "twenty-eight billion, one hundred sixty million, eight hundred eighty-one thousand, three hundred fifteen".