64745063560 has 32 divisors (see below), whose sum is σ = 145705847040. Its totient is φ = 25892789184.

The previous prime is 64745063557. The next prime is 64745063561. The reversal of 64745063560 is 6536054746.

It is a self number, because there is not a number n which added to its sum of digits gives 64745063560.

It is not an unprimeable number, because it can be changed into a prime (64745063561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39799 + ... + 362041.

It is an arithmetic number, because the mean of its divisors is an integer number (4553307720).

Almost surely, 2^64745063560 is an apocalyptic number.

It is an amenable number.

64745063560 is an abundant number, since it is smaller than the sum of its proper divisors (80960783480).

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

64745063560 is a wasteful number, since it uses less digits than its factorization.

64745063560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327277 (or 327273 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 64745063560 in words is "sixty-four billion, seven hundred forty-five million, sixty-three thousand, five hundred sixty".