8557815480 has 64 divisors (see below), whose sum is σ = 26108611200. Its totient is φ = 2243402880.

The previous prime is 8557815467. The next prime is 8557815481. The reversal of 8557815480 is 845187558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8557815481) 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, 597286 + ... + 611445.

It is an arithmetic number, because the mean of its divisors is an integer number (407947050).

Almost surely, 2^8557815480 is an apocalyptic number.

It is an amenable number.

8557815480 is an abundant number, since it is smaller than the sum of its proper divisors (17550795720).

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

8557815480 is a wasteful number, since it uses less digits than its factorization.

8557815480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1208804 (or 1208800 counting only the distinct ones).

The product of its (nonzero) digits is 1792000, while the sum is 51.

The square root of 8557815480 is about 92508.4616670281. The cubic root of 8557815480 is about 2045.4442141718. Note that the first 3 decimals are identical.

The spelling of 8557815480 in words is "eight billion, five hundred fifty-seven million, eight hundred fifteen thousand, four hundred eighty".