6615665051 has 4 divisors (see below), whose sum is σ = 6708843504. Its totient is φ = 6522486600.

The previous prime is 6615665047. The next prime is 6615665123. The reversal of 6615665051 is 1505665166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6615665051 - 2² = 6615665047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6615665041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46589120 + ... + 46589261.

It is an arithmetic number, because the mean of its divisors is an integer number (1677210876).

Almost surely, 2^6615665051 is an apocalyptic number.

6615665051 is a deficient number, since it is larger than the sum of its proper divisors (93178453).

6615665051 is an equidigital number, since it uses as much as digits as its factorization.

6615665051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93178452.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 6615665051 is about 81336.7386302156. The cubic root of 6615665051 is about 1877.2603307418.

The spelling of 6615665051 in words is "six billion, six hundred fifteen million, six hundred sixty-five thousand, fifty-one".