64635467785273 has 24 divisors (see below), whose sum is σ = 83083222908224. Its totient is φ = 49194013508640.

The previous prime is 64635467785261. The next prime is 64635467785313. The reversal of 64635467785273 is 37258776453646.

It is a de Polignac number, because none of the positive numbers 2^k-64635467785273 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64635467785196 and 64635467785205.

It is not an unprimeable number, because it can be changed into a prime (64635467785223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 887301486 + ... + 887374327.

Almost surely, 2^{64635467785273} is an apocalyptic number.

It is an amenable number.

64635467785273 is a deficient number, since it is larger than the sum of its proper divisors (18447755122951).

64635467785273 is a wasteful number, since it uses less digits than its factorization.

64635467785273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774675885 (or 1774675874 counting only the distinct ones).

The product of its digits is 4267468800, while the sum is 73.

The spelling of 64635467785273 in words is "sixty-four trillion, six hundred thirty-five billion, four hundred sixty-seven million, seven hundred eighty-five thousand, two hundred seventy-three".