28317733081 has 32 divisors (see below), whose sum is σ = 31814415360. Its totient is φ = 24988286400.

The previous prime is 28317733049. The next prime is 28317733127. The reversal of 28317733081 is 18033771382.

It is not a de Polignac number, because 28317733081 - 2⁵ = 28317733049 is a prime.

It is a super-2 number, since 2×28317733081² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28317733481) 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, 25215586 + ... + 25216708.

It is an arithmetic number, because the mean of its divisors is an integer number (994200480).

Almost surely, 2^28317733081 is an apocalyptic number.

It is an amenable number.

28317733081 is a deficient number, since it is larger than the sum of its proper divisors (3496682279).

28317733081 is a wasteful number, since it uses less digits than its factorization.

28317733081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 28317733081 in words is "twenty-eight billion, three hundred seventeen million, seven hundred thirty-three thousand, eighty-one".