64434250564 has 12 divisors (see below), whose sum is σ = 112807313388. Its totient is φ = 32203589600.

The previous prime is 64434250553. The next prime is 64434250597. The reversal of 64434250564 is 46505243446.

It can be written as a sum of positive squares in 2 ways, for example, as 5575608900 + 58858641664 = 74670^2 + 242608^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64434250564.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3373207 + ... + 3392254.

It is an arithmetic number, because the mean of its divisors is an integer number (9400609449).

Almost surely, 2^64434250564 is an apocalyptic number.

It is an amenable number.

64434250564 is a deficient number, since it is larger than the sum of its proper divisors (48373062824).

64434250564 is a wasteful number, since it uses less digits than its factorization.

64434250564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6767846 (or 6767844 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 43.

The spelling of 64434250564 in words is "sixty-four billion, four hundred thirty-four million, two hundred fifty thousand, five hundred sixty-four".