115820149531 has 2 divisors, whose sum is σ = 115820149532. Its totient is φ = 115820149530.

The previous prime is 115820149519. The next prime is 115820149537. The reversal of 115820149531 is 135941028511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115820149531 - 2⁵ = 115820149499 is a prime.

It is a super-2 number, since 2×115820149531² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (115820149537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57910074765 + 57910074766.

It is an arithmetic number, because the mean of its divisors is an integer number (57910074766).

Almost surely, 2^115820149531 is an apocalyptic number.

115820149531 is a deficient number, since it is larger than the sum of its proper divisors (1).

115820149531 is an equidigital number, since it uses as much as digits as its factorization.

115820149531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 40.

The spelling of 115820149531 in words is "one hundred fifteen billion, eight hundred twenty million, one hundred forty-nine thousand, five hundred thirty-one".