66066000051 has 4 divisors (see below), whose sum is σ = 88088000072. Its totient is φ = 44044000032.

The previous prime is 66066000047. The next prime is 66066000079. The reversal of 66066000051 is 15000066066.

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

It is not a de Polignac number, because 66066000051 - 2² = 66066000047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66065999982 and 66066000018.

It is not an unprimeable number, because it can be changed into a prime (66066000031) 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, 11011000006 + ... + 11011000011.

It is an arithmetic number, because the mean of its divisors is an integer number (22022000018).

Almost surely, 2^66066000051 is an apocalyptic number.

66066000051 is a deficient number, since it is larger than the sum of its proper divisors (22022000021).

66066000051 is a wasteful number, since it uses less digits than its factorization.

66066000051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22022000020.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 66066000051 in words is "sixty-six billion, sixty-six million, fifty-one", and thus it is an aban number and an uban number.