64534347651 has 16 divisors (see below), whose sum is σ = 86407326720. Its totient is φ = 42842406720.

The previous prime is 64534347629. The next prime is 64534347659. The reversal of 64534347651 is 15674343546.

It is not a de Polignac number, because 64534347651 - 2⁶ = 64534347587 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64534347651.

It is not an unprimeable number, because it can be changed into a prime (64534347659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 930310 + ... + 997268.

It is an arithmetic number, because the mean of its divisors is an integer number (5400457920).

Almost surely, 2^64534347651 is an apocalyptic number.

64534347651 is a deficient number, since it is larger than the sum of its proper divisors (21872979069).

64534347651 is a wasteful number, since it uses less digits than its factorization.

64534347651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68306.

The product of its digits is 3628800, while the sum is 48.

The spelling of 64534347651 in words is "sixty-four billion, five hundred thirty-four million, three hundred forty-seven thousand, six hundred fifty-one".