65444665045 has 32 divisors (see below), whose sum is σ = 83378937600. Its totient is φ = 49173935616.

The previous prime is 65444665031. The next prime is 65444665051. The reversal of 65444665045 is 54056644456.

It is a cyclic number.

It is not a de Polignac number, because 65444665045 - 2⁷ = 65444664917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65444665045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11541471 + ... + 11547139.

It is an arithmetic number, because the mean of its divisors is an integer number (2605591800).

Almost surely, 2^65444665045 is an apocalyptic number.

It is an amenable number.

65444665045 is a deficient number, since it is larger than the sum of its proper divisors (17934272555).

65444665045 is a wasteful number, since it uses less digits than its factorization.

65444665045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717.

The product of its (nonzero) digits is 6912000, while the sum is 49.

The spelling of 65444665045 in words is "sixty-five billion, four hundred forty-four million, six hundred sixty-five thousand, forty-five".