115415551500 has 96 divisors (see below), whose sum is σ = 337287367872. Its totient is φ = 30667840000.

The previous prime is 115415551451. The next prime is 115415551501. The reversal of 115415551500 is 5155514511.

It is not an unprimeable number, because it can be changed into a prime (115415551501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284590 + ... + 558410.

It is an arithmetic number, because the mean of its divisors is an integer number (3513410082).

Almost surely, 2^115415551500 is an apocalyptic number.

115415551500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115415551500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168643683936).

115415551500 is an abundant number, since it is smaller than the sum of its proper divisors (221871816372).

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

115415551500 is a wasteful number, since it uses less digits than its factorization.

115415551500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274124 (or 274112 counting only the distinct ones).

The product of its (nonzero) digits is 12500, while the sum is 33.

The spelling of 115415551500 in words is "one hundred fifteen billion, four hundred fifteen million, five hundred fifty-one thousand, five hundred".