64813706790 has 96 divisors (see below), whose sum is σ = 181197181440. Its totient is φ = 14794266816.

The previous prime is 64813706761. The next prime is 64813706807. The reversal of 64813706790 is 9760731846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1056499 + ... + 1116161.

It is an arithmetic number, because the mean of its divisors is an integer number (1887470640).

Almost surely, 2^64813706790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64813706790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90598590720).

64813706790 is an abundant number, since it is smaller than the sum of its proper divisors (116383474650).

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

64813706790 is a wasteful number, since it uses less digits than its factorization.

64813706790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60426 (or 60419 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 64813706790 in words is "sixty-four billion, eight hundred thirteen million, seven hundred six thousand, seven hundred ninety".