8381115580 has 12 divisors (see below), whose sum is σ = 17600342760. Its totient is φ = 3352446224.

The previous prime is 8381115497. The next prime is 8381115599. The reversal of 8381115580 is 855111838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209527870 + ... + 209527909.

It is an arithmetic number, because the mean of its divisors is an integer number (1466695230).

Almost surely, 2^8381115580 is an apocalyptic number.

It is an amenable number.

8381115580 is an abundant number, since it is smaller than the sum of its proper divisors (9219227180).

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

8381115580 is a wasteful number, since it uses less digits than its factorization.

8381115580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419055788 (or 419055786 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 40.

The square root of 8381115580 is about 91548.4329740275. The cubic root of 8381115580 is about 2031.2682328872.

The spelling of 8381115580 in words is "eight billion, three hundred eighty-one million, one hundred fifteen thousand, five hundred eighty".