64604664244 has 6 divisors (see below), whose sum is σ = 113058162434. Its totient is φ = 32302332120.

The previous prime is 64604664233. The next prime is 64604664251. The reversal of 64604664244 is 44246640646.

It can be written as a sum of positive squares in only one way, i.e., 53366544144 + 11238120100 = 231012^2 + 106010^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64604664194 and 64604664203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8075583027 + ... + 8075583034.

Almost surely, 2^64604664244 is an apocalyptic number.

It is an amenable number.

64604664244 is a deficient number, since it is larger than the sum of its proper divisors (48453498190).

64604664244 is a wasteful number, since it uses less digits than its factorization.

64604664244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16151166065 (or 16151166063 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 46.

The spelling of 64604664244 in words is "sixty-four billion, six hundred four million, six hundred sixty-four thousand, two hundred forty-four".