64051562644 has 24 divisors (see below), whose sum is σ = 119033893440. Its totient is φ = 30071712384.

The previous prime is 64051562629. The next prime is 64051562669. The reversal of 64051562644 is 44626515046.

It is a self number, because there is not a number n which added to its sum of digits gives 64051562644.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3720544 + ... + 3737719.

It is an arithmetic number, because the mean of its divisors is an integer number (4959745560).

Almost surely, 2^64051562644 is an apocalyptic number.

It is an amenable number.

64051562644 is a deficient number, since it is larger than the sum of its proper divisors (54982330796).

64051562644 is a wasteful number, since it uses less digits than its factorization.

64051562644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7458399 (or 7458397 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 64051562644 in words is "sixty-four billion, fifty-one million, five hundred sixty-two thousand, six hundred forty-four".