6621165495 has 48 divisors (see below), whose sum is σ = 13164782592. Its totient is φ = 3015610560.

The previous prime is 6621165449. The next prime is 6621165521. The reversal of 6621165495 is 5945611266.

6621165495 is a `hidden beast` number, since 6 + 621 + 16 + 5 + 4 + 9 + 5 = 666.

It is not a de Polignac number, because 6621165495 - 2¹² = 6621161399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 6621165495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46584 + ... + 124146.

It is an arithmetic number, because the mean of its divisors is an integer number (274266304).

Almost surely, 2^6621165495 is an apocalyptic number.

6621165495 is a deficient number, since it is larger than the sum of its proper divisors (6543617097).

6621165495 is a wasteful number, since it uses less digits than its factorization.

6621165495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77852 (or 77849 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 6621165495 is about 81370.5443941479. The cubic root of 6621165495 is about 1877.7804550657.

The spelling of 6621165495 in words is "six billion, six hundred twenty-one million, one hundred sixty-five thousand, four hundred ninety-five".