115238194243730 has 16 divisors (see below), whose sum is σ = 207431384036184. Its totient is φ = 46094692275840.

The previous prime is 115238194243723. The next prime is 115238194243813. The reversal of 115238194243730 is 37342491832511.

It can be written as a sum of positive squares in 4 ways, for example, as 35076989391889 + 80161204851841 = 5922583^2 + 8953279^2 .

It is a super-2 number, since 2×115238194243730² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72350507 + ... + 73926126.

Almost surely, 2^{115238194243730} is an apocalyptic number.

115238194243730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115238194243730 is a deficient number, since it is larger than the sum of its proper divisors (92193189792454).

115238194243730 is a wasteful number, since it uses less digits than its factorization.

115238194243730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146355421.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 115238194243730 in words is "one hundred fifteen trillion, two hundred thirty-eight billion, one hundred ninety-four million, two hundred forty-three thousand, seven hundred thirty".