64966045895 has 4 divisors (see below), whose sum is σ = 77959255080. Its totient is φ = 51972836712.

The previous prime is 64966045883. The next prime is 64966045897. The reversal of 64966045895 is 59854066946.

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 64966045895 - 2⁶ = 64966045831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64966045897) 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, 6496604585 + ... + 6496604594.

It is an arithmetic number, because the mean of its divisors is an integer number (19489813770).

Almost surely, 2^64966045895 is an apocalyptic number.

64966045895 is a deficient number, since it is larger than the sum of its proper divisors (12993209185).

64966045895 is a wasteful number, since it uses less digits than its factorization.

64966045895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12993209184.

The product of its (nonzero) digits is 55987200, while the sum is 62.

The spelling of 64966045895 in words is "sixty-four billion, nine hundred sixty-six million, forty-five thousand, eight hundred ninety-five".