115644656531 has 8 divisors (see below), whose sum is σ = 118358575104. Its totient is φ = 112931852040.

The previous prime is 115644656471. The next prime is 115644656593. The reversal of 115644656531 is 135656446511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115644656531 - 2²⁶ = 115577547667 is a prime.

It is a super-2 number, since 2×115644656531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115644056531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66611 + ... + 485516.

It is an arithmetic number, because the mean of its divisors is an integer number (14794821888).

Almost surely, 2^115644656531 is an apocalyptic number.

115644656531 is a deficient number, since it is larger than the sum of its proper divisors (2713918573).

115644656531 is an equidigital number, since it uses as much as digits as its factorization.

115644656531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557041.

The product of its digits is 1296000, while the sum is 47.

The spelling of 115644656531 in words is "one hundred fifteen billion, six hundred forty-four million, six hundred fifty-six thousand, five hundred thirty-one".