115540154520 has 384 divisors, whose sum is σ = 410914114560. Its totient is φ = 25454177280.

The previous prime is 115540154503. The next prime is 115540154533. The reversal of 115540154520 is 25451045511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 131744322 + ... + 131745198.

It is an arithmetic number, because the mean of its divisors is an integer number (1070088840).

Almost surely, 2^115540154520 is an apocalyptic number.

115540154520 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 115540154520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205457057280).

115540154520 is an abundant number, since it is smaller than the sum of its proper divisors (295373960040).

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

115540154520 is a wasteful number, since it uses less digits than its factorization.

115540154520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063 (or 1012 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 115540154520 in words is "one hundred fifteen billion, five hundred forty million, one hundred fifty-four thousand, five hundred twenty".