115786865428 has 48 divisors (see below), whose sum is σ = 239017096080. Its totient is φ = 48562182144.

The previous prime is 115786865407. The next prime is 115786865429. The reversal of 115786865428 is 824568687511.

It can be written as a sum of positive squares in 8 ways, for example, as 10258043524 + 105528821904 = 101282^2 + 324852^2 .

It is a super-3 number, since 3×115786865428³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115786865429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2232651 + ... + 2283922.

It is an arithmetic number, because the mean of its divisors is an integer number (4979522835).

Almost surely, 2^115786865428 is an apocalyptic number.

It is an amenable number.

115786865428 is an abundant number, since it is smaller than the sum of its proper divisors (123230230652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115786865428 is a wasteful number, since it uses less digits than its factorization.

115786865428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516636 (or 4516634 counting only the distinct ones).

The product of its digits is 25804800, while the sum is 61.

The spelling of 115786865428 in words is "one hundred fifteen billion, seven hundred eighty-six million, eight hundred sixty-five thousand, four hundred twenty-eight".