115539000780 has 192 divisors, whose sum is σ = 380015677440. Its totient is φ = 25683609600.

The previous prime is 115539000761. The next prime is 115539000799. The reversal of 115539000780 is 87000935511.

It is an interprime number because it is at equal distance from previous prime (115539000761) and next prime (115539000799).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2254845 + ... + 2305515.

It is an arithmetic number, because the mean of its divisors is an integer number (1979248320).

Almost surely, 2^115539000780 is an apocalyptic number.

115539000780 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 115539000780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190007838720).

115539000780 is an abundant number, since it is smaller than the sum of its proper divisors (264476676660).

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

115539000780 is a wasteful number, since it uses less digits than its factorization.

115539000780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50840 (or 50838 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 39.

The spelling of 115539000780 in words is "one hundred fifteen billion, five hundred thirty-nine million, seven hundred eighty", and thus it is an aban number.