64257355652 has 12 divisors (see below), whose sum is σ = 128514711360. Its totient is φ = 27538866696.

The previous prime is 64257355649. The next prime is 64257355697. The reversal of 64257355652 is 25655375246.

64257355652 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 64257355652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1147452752 + ... + 1147452807.

It is an arithmetic number, because the mean of its divisors is an integer number (10709559280).

Almost surely, 2^64257355652 is an apocalyptic number.

It is an amenable number.

64257355652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64257355652 is a wasteful number, since it uses less digits than its factorization.

64257355652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294905570 (or 2294905568 counting only the distinct ones).

The product of its digits is 7560000, while the sum is 50.

The spelling of 64257355652 in words is "sixty-four billion, two hundred fifty-seven million, three hundred fifty-five thousand, six hundred fifty-two".