6665996051 has 16 divisors (see below), whose sum is σ = 7838728800. Its totient is φ = 5588593920.

The previous prime is 6665996047. The next prime is 6665996069. The reversal of 6665996051 is 1506995666.

It is not a de Polignac number, because 6665996051 - 2² = 6665996047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6665995984 and 6665996002.

It is not an unprimeable number, because it can be changed into a prime (6665996011) 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, 134975 + ... + 177623.

It is an arithmetic number, because the mean of its divisors is an integer number (489920550).

Almost surely, 2^6665996051 is an apocalyptic number.

6665996051 is a deficient number, since it is larger than the sum of its proper divisors (1172732749).

6665996051 is a wasteful number, since it uses less digits than its factorization.

6665996051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43766.

The product of its (nonzero) digits is 2624400, while the sum is 53.

The square root of 6665996051 is about 81645.5513240005. The cubic root of 6665996051 is about 1882.0089482955.

The spelling of 6665996051 in words is "six billion, six hundred sixty-five million, nine hundred ninety-six thousand, fifty-one".