28160137481 has 24 divisors (see below), whose sum is σ = 34182832320. Its totient is φ = 22720909536.

The previous prime is 28160137459. The next prime is 28160137487. The reversal of 28160137481 is 18473106182.

It is not a de Polignac number, because 28160137481 - 2²² = 28155943177 is a prime.

It is a super-2 number, since 2×28160137481² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28160137487) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 361250 + ... + 432228.

It is an arithmetic number, because the mean of its divisors is an integer number (1424284680).

Almost surely, 2^28160137481 is an apocalyptic number.

It is an amenable number.

28160137481 is a deficient number, since it is larger than the sum of its proper divisors (6022694839).

28160137481 is a wasteful number, since it uses less digits than its factorization.

28160137481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71181 (or 71162 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 28160137481 in words is "twenty-eight billion, one hundred sixty million, one hundred thirty-seven thousand, four hundred eighty-one".