115645385769 has 24 divisors (see below), whose sum is σ = 162799044480. Its totient is φ = 73011095712.

The previous prime is 115645385761. The next prime is 115645385789. The reversal of 115645385769 is 967583546511.

It is a happy number.

It is not a de Polignac number, because 115645385769 - 2³ = 115645385761 is a prime.

It is a super-2 number, since 2×115645385769² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115645385761) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3001344 + ... + 3039630.

It is an arithmetic number, because the mean of its divisors is an integer number (6783293520).

Almost surely, 2^115645385769 is an apocalyptic number.

115645385769 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

115645385769 is a deficient number, since it is larger than the sum of its proper divisors (47153658711).

115645385769 is a wasteful number, since it uses less digits than its factorization.

115645385769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41117 (or 41098 counting only the distinct ones).

The product of its digits is 27216000, while the sum is 60.

The spelling of 115645385769 in words is "one hundred fifteen billion, six hundred forty-five million, three hundred eighty-five thousand, seven hundred sixty-nine".