64959613699764 has 144 divisors (see below), whose sum is σ = 176905534740480. Its totient is φ = 18498240008640.

The previous prime is 64959613699753. The next prime is 64959613699829. The reversal of 64959613699764 is 46799631695946.

It is a Harshad number since it is a multiple of its sum of digits (84).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228277579 + ... + 228561965.

It is an arithmetic number, because the mean of its divisors is an integer number (1228510657920).

Almost surely, 2^{64959613699764} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64959613699764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88452767370240).

64959613699764 is an abundant number, since it is smaller than the sum of its proper divisors (111945921040716).

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

64959613699764 is a wasteful number, since it uses less digits than its factorization.

64959613699764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285698 (or 285689 counting only the distinct ones).

The product of its digits is 14285134080, while the sum is 84.

The spelling of 64959613699764 in words is "sixty-four trillion, nine hundred fifty-nine billion, six hundred thirteen million, six hundred ninety-nine thousand, seven hundred sixty-four".