64566267005 has 4 divisors (see below), whose sum is σ = 77479520412. Its totient is φ = 51653013600.

The previous prime is 64566266993. The next prime is 64566267037. The reversal of 64566267005 is 50076266546.

It is a happy number.

64566267005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 33283623844 + 31282643161 = 182438^2 + 176869^2 .

It is not a de Polignac number, because 64566267005 - 2⁸ = 64566266749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6456626696 + ... + 6456626705.

It is an arithmetic number, because the mean of its divisors is an integer number (19369880103).

Almost surely, 2^64566267005 is an apocalyptic number.

It is an amenable number.

64566267005 is a deficient number, since it is larger than the sum of its proper divisors (12913253407).

64566267005 is a wasteful number, since it uses less digits than its factorization.

64566267005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12913253406.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 64566267005 in words is "sixty-four billion, five hundred sixty-six million, two hundred sixty-seven thousand, five".