115387391585556 has 36 divisors (see below), whose sum is σ = 298456793226592. Its totient is φ = 37567987957584.

The previous prime is 115387391585449. The next prime is 115387391585561. The reversal of 115387391585556 is 655585193783511.

It is a happy number.

115387391585556 is a `hidden beast` number, since 1 + 1 + 5 + 3 + 8 + 7 + 39 + 1 + 585 + 5 + 5 + 6 = 666.

115387391585556 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37269827776 + ... + 37269830871.

Almost surely, 2^{115387391585556} is an apocalyptic number.

It is an amenable number.

115387391585556 is an abundant number, since it is smaller than the sum of its proper divisors (183069401641036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115387391585556 is a wasteful number, since it uses less digits than its factorization.

115387391585556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74539658700 (or 74539658695 counting only the distinct ones).

The product of its digits is 680400000, while the sum is 72.

The spelling of 115387391585556 in words is "one hundred fifteen trillion, three hundred eighty-seven billion, three hundred ninety-one million, five hundred eighty-five thousand, five hundred fifty-six".