115215514544 has 20 divisors (see below), whose sum is σ = 240401602896. Its totient is φ = 53176391232.

The previous prime is 115215514543. The next prime is 115215514559. The reversal of 115215514544 is 445415512511.

It is a super-2 number, since 2×115215514544² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115215514498 and 115215514507.

It is not an unprimeable number, because it can be changed into a prime (115215514543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276960164 + ... + 276960579.

Almost surely, 2^115215514544 is an apocalyptic number.

It is an amenable number.

115215514544 is an abundant number, since it is smaller than the sum of its proper divisors (125186088352).

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

115215514544 is a wasteful number, since it uses less digits than its factorization.

115215514544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553920764 (or 553920758 counting only the distinct ones).

The product of its digits is 80000, while the sum is 38.

The spelling of 115215514544 in words is "one hundred fifteen billion, two hundred fifteen million, five hundred fourteen thousand, five hundred forty-four".