6155666500 has 24 divisors (see below), whose sum is σ = 13443976728. Its totient is φ = 2462266400.

The previous prime is 6155666477. The next prime is 6155666501. The reversal of 6155666500 is 56665516.

It can be written as a sum of positive squares in 4 ways, for example, as 790396996 + 5365269504 = 28114^2 + 73248^2 .

It is not an unprimeable number, because it can be changed into a prime (6155666501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6155167 + ... + 6156166.

It is an arithmetic number, because the mean of its divisors is an integer number (560165697).

Almost surely, 2^6155666500 is an apocalyptic number.

It is an amenable number.

6155666500 is an abundant number, since it is smaller than the sum of its proper divisors (7288310228).

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

6155666500 is a wasteful number, since it uses less digits than its factorization.

6155666500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12311352 (or 12311340 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 6155666500 is about 78458.0556730792. The cubic root of 6155666500 is about 1832.7013266891.

The spelling of 6155666500 in words is "six billion, one hundred fifty-five million, six hundred sixty-six thousand, five hundred".