115800010538 has 4 divisors (see below), whose sum is σ = 173700015810. Its totient is φ = 57900005268.

The previous prime is 115800010493. The next prime is 115800010561. The reversal of 115800010538 is 835010008511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 835010008511 = 7 ⋅119287144073.

It can be written as a sum of positive squares in only one way, i.e., 99365539729 + 16434470809 = 315223^2 + 128197^2 .

It is a super-2 number, since 2×115800010538² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28950002633 + ... + 28950002636.

Almost surely, 2^115800010538 is an apocalyptic number.

115800010538 is a deficient number, since it is larger than the sum of its proper divisors (57900005272).

115800010538 is an equidigital number, since it uses as much as digits as its factorization.

115800010538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57900005271.

The product of its (nonzero) digits is 4800, while the sum is 32.

The spelling of 115800010538 in words is "one hundred fifteen billion, eight hundred million, ten thousand, five hundred thirty-eight".