115544221504 has 112 divisors (see below), whose sum is σ = 261782478720. Its totient is φ = 50255216640.

The previous prime is 115544221433. The next prime is 115544221519. The reversal of 115544221504 is 405122445511.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 115544221504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779389 + ... + 915715.

It is an arithmetic number, because the mean of its divisors is an integer number (2337343560).

Almost surely, 2^115544221504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115544221504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130891239360).

115544221504 is an abundant number, since it is smaller than the sum of its proper divisors (146238257216).

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

115544221504 is a wasteful number, since it uses less digits than its factorization.

115544221504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136416 (or 136406 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 34.

The spelling of 115544221504 in words is "one hundred fifteen billion, five hundred forty-four million, two hundred twenty-one thousand, five hundred four".