28857334356165 has 32 divisors (see below), whose sum is σ = 55871679294720. Its totient is φ = 12415928730624.

The previous prime is 28857334356143. The next prime is 28857334356181. The reversal of 28857334356165 is 56165343375882.

It is not a de Polignac number, because 28857334356165 - 2¹⁰ = 28857334355141 is a prime.

It is a super-2 number, since 2×28857334356165² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28857334356096 and 28857334356105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8083285150 + ... + 8083288719.

It is an arithmetic number, because the mean of its divisors is an integer number (1745989977960).

Almost surely, 2^{28857334356165} is an apocalyptic number.

It is an amenable number.

28857334356165 is a deficient number, since it is larger than the sum of its proper divisors (27014344938555).

28857334356165 is a wasteful number, since it uses less digits than its factorization.

28857334356165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16166573901.

The product of its digits is 435456000, while the sum is 66.

The spelling of 28857334356165 in words is "twenty-eight trillion, eight hundred fifty-seven billion, three hundred thirty-four million, three hundred fifty-six thousand, one hundred sixty-five".