8155688660 has 48 divisors (see below), whose sum is σ = 19579365120. Its totient is φ = 2795420160.

The previous prime is 8155688621. The next prime is 8155688663. The reversal of 8155688660 is 668865518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8155688663) 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, 660140 + ... + 672380.

It is an arithmetic number, because the mean of its divisors is an integer number (407903440).

Almost surely, 2^8155688660 is an apocalyptic number.

It is an amenable number.

8155688660 is an abundant number, since it is smaller than the sum of its proper divisors (11423676460).

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

8155688660 is a wasteful number, since it uses less digits than its factorization.

8155688660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17016 (or 17014 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 53.

The square root of 8155688660 is about 90308.8515041577. The cubic root of 8155688660 is about 2012.8907902554.

The spelling of 8155688660 in words is "eight billion, one hundred fifty-five million, six hundred eighty-eight thousand, six hundred sixty".