115485782920 has 32 divisors (see below), whose sum is σ = 260921220120. Its totient is φ = 46002631680.

The previous prime is 115485782917. The next prime is 115485783029. The reversal of 115485782920 is 29287584511.

It can be written as a sum of positive squares in 4 ways, for example, as 115478991684 + 6791236 = 339822^2 + 2606^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5980287 + ... + 5999566.

Almost surely, 2^115485782920 is an apocalyptic number.

115485782920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115485782920 is an abundant number, since it is smaller than the sum of its proper divisors (145435437200).

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

115485782920 is a wasteful number, since it uses less digits than its factorization.

115485782920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11980105 (or 11980101 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 52.

The spelling of 115485782920 in words is "one hundred fifteen billion, four hundred eighty-five million, seven hundred eighty-two thousand, nine hundred twenty".