66061010065 has 8 divisors (see below), whose sum is σ = 79480194048. Its totient is φ = 52710820080.

The previous prime is 66061010051. The next prime is 66061010089. The reversal of 66061010065 is 56001016066.

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

It is not a de Polignac number, because 66061010065 - 2⁵ = 66061010033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17246391 + ... + 17250220.

It is an arithmetic number, because the mean of its divisors is an integer number (9935024256).

Almost surely, 2^66061010065 is an apocalyptic number.

It is an amenable number.

66061010065 is a deficient number, since it is larger than the sum of its proper divisors (13419183983).

66061010065 is a wasteful number, since it uses less digits than its factorization.

66061010065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34496999.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 66061010065 in words is "sixty-six billion, sixty-one million, ten thousand, sixty-five".