64969709904 has 400 divisors, whose sum is σ = 217699637760. Its totient is φ = 18499104000.

The previous prime is 64969709881. The next prime is 64969709933. The reversal of 64969709904 is 40990796946.

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 79 ways as a sum of consecutive naturals, for example, 35482269 + ... + 35484099.

Almost surely, 2^64969709904 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 64969709904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108849818880).

64969709904 is an abundant number, since it is smaller than the sum of its proper divisors (152729927856).

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

64969709904 is a wasteful number, since it uses less digits than its factorization.

64969709904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012 (or 1997 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 64969709904 in words is "sixty-four billion, nine hundred sixty-nine million, seven hundred nine thousand, nine hundred four".