6665560051 has 8 divisors (see below), whose sum is σ = 6716553840. Its totient is φ = 6614600448.

The previous prime is 6665560049. The next prime is 6665560061. The reversal of 6665560051 is 1500655666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6665560051 - 2¹ = 6665560049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6665559986 and 6665560013.

It is not an unprimeable number, because it can be changed into a prime (6665560061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494635 + ... + 507931.

It is an arithmetic number, because the mean of its divisors is an integer number (839569230).

Almost surely, 2^6665560051 is an apocalyptic number.

6665560051 is a deficient number, since it is larger than the sum of its proper divisors (50993789).

6665560051 is a wasteful number, since it uses less digits than its factorization.

6665560051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17093.

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

The square root of 6665560051 is about 81642.8812022212. The cubic root of 6665560051 is about 1881.9679154783.

The spelling of 6665560051 in words is "six billion, six hundred sixty-five million, five hundred sixty thousand, fifty-one".