8215995580 has 48 divisors (see below), whose sum is σ = 19558738080. Its totient is φ = 2873933568.

The previous prime is 8215995563. The next prime is 8215995581. The reversal of 8215995580 is 855995128.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8215995581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 826639 + ... + 836518.

It is an arithmetic number, because the mean of its divisors is an integer number (407473710).

Almost surely, 2^8215995580 is an apocalyptic number.

It is an amenable number.

8215995580 is an abundant number, since it is smaller than the sum of its proper divisors (11342742500).

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

8215995580 is a wasteful number, since it uses less digits than its factorization.

8215995580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663198 (or 1663196 counting only the distinct ones).

The product of its (nonzero) digits is 1296000, while the sum is 52.

The square root of 8215995580 is about 90642.1291674021. The cubic root of 8215995580 is about 2017.8400252592.

The spelling of 8215995580 in words is "eight billion, two hundred fifteen million, nine hundred ninety-five thousand, five hundred eighty".