6156820660 has 24 divisors (see below), whose sum is σ = 13050162720. Its totient is φ = 2439711264.

The previous prime is 6156820651. The next prime is 6156820673. The reversal of 6156820660 is 660286516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436370 + ... + 1440649.

It is an arithmetic number, because the mean of its divisors is an integer number (543756780).

Almost surely, 2^6156820660 is an apocalyptic number.

It is an amenable number.

6156820660 is an abundant number, since it is smaller than the sum of its proper divisors (6893342060).

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

6156820660 is a wasteful number, since it uses less digits than its factorization.

6156820660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877135 (or 2877133 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 6156820660 is about 78465.4105960072. The cubic root of 6156820660 is about 1832.8158606381.

It can be divided in two parts, 61568 and 20660, that added together give a palindrome (82228).

The spelling of 6156820660 in words is "six billion, one hundred fifty-six million, eight hundred twenty thousand, six hundred sixty".