64502647685 has 24 divisors (see below), whose sum is σ = 91566560160. Its totient is φ = 43480709664.

The previous prime is 64502647663. The next prime is 64502647697. The reversal of 64502647685 is 58674620546.

It is not a de Polignac number, because 64502647685 - 2⁶ = 64502647621 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2216699 + ... + 2245608.

It is an arithmetic number, because the mean of its divisors is an integer number (3815273340).

Almost surely, 2^64502647685 is an apocalyptic number.

It is an amenable number.

64502647685 is a deficient number, since it is larger than the sum of its proper divisors (27063912475).

64502647685 is a wasteful number, since it uses less digits than its factorization.

64502647685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4462385 (or 4462378 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 53.

The spelling of 64502647685 in words is "sixty-four billion, five hundred two million, six hundred forty-seven thousand, six hundred eighty-five".