64635134536 has 64 divisors (see below), whose sum is σ = 145716842880. Its totient is φ = 26294699520.

The previous prime is 64635134507. The next prime is 64635134561. The reversal of 64635134536 is 63543153646.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295470 + ... + 465373.

It is an arithmetic number, because the mean of its divisors is an integer number (2276825670).

Almost surely, 2^64635134536 is an apocalyptic number.

It is an amenable number.

64635134536 is an abundant number, since it is smaller than the sum of its proper divisors (81081708344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64635134536 is a wasteful number, since it uses less digits than its factorization.

64635134536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760934 (or 760930 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 46.

The spelling of 64635134536 in words is "sixty-four billion, six hundred thirty-five million, one hundred thirty-four thousand, five hundred thirty-six".