52645564665 has 24 divisors (see below), whose sum is σ = 91379283840. Its totient is φ = 28038566304.

The previous prime is 52645564571. The next prime is 52645564703. The reversal of 52645564665 is 56646554625.

It is a happy number.

52645564665 is a `hidden beast` number, since 5 + 26 + 4 + 556 + 4 + 6 + 65 = 666.

52645564665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 52645564665 - 2⁷ = 52645564537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 781207 + ... + 845916.

It is an arithmetic number, because the mean of its divisors is an integer number (3807470160).

Almost surely, 2^52645564665 is an apocalyptic number.

It is an amenable number.

52645564665 is a deficient number, since it is larger than the sum of its proper divisors (38733719175).

52645564665 is a wasteful number, since it uses less digits than its factorization.

52645564665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627853 (or 1627850 counting only the distinct ones).

The product of its digits is 25920000, while the sum is 54.

The spelling of 52645564665 in words is "fifty-two billion, six hundred forty-five million, five hundred sixty-four thousand, six hundred sixty-five".