8215415340808 has 16 divisors (see below), whose sum is σ = 16588819438380. Its totient is φ = 3791730157248.

The previous prime is 8215415340773. The next prime is 8215415340817. The reversal of 8215415340808 is 8080435145128.

It can be written as a sum of positive squares in 2 ways, for example, as 8210391082884 + 5024257924 = 2865378^2 + 70882^2 .

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, 39497189035 + ... + 39497189242.

Almost surely, 2^{8215415340808} is an apocalyptic number.

It is an amenable number.

8215415340808 is an abundant number, since it is smaller than the sum of its proper divisors (8373404097572).

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

8215415340808 is a wasteful number, since it uses less digits than its factorization.

8215415340808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78994378296 (or 78994378292 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 49.

The spelling of 8215415340808 in words is "eight trillion, two hundred fifteen billion, four hundred fifteen million, three hundred forty thousand, eight hundred eight".