64794256782 has 8 divisors (see below), whose sum is σ = 129588513576. Its totient is φ = 21598085592.

The previous prime is 64794256781. The next prime is 64794256801. The reversal of 64794256782 is 28765249746.

64794256782 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

64794256782 is an admirable number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64794256781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5399521393 + ... + 5399521404.

It is an arithmetic number, because the mean of its divisors is an integer number (16198564197).

Almost surely, 2^64794256782 is an apocalyptic number.

64794256782 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

64794256782 is a wasteful number, since it uses less digits than its factorization.

64794256782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10799042802.

The product of its digits is 40642560, while the sum is 60.

The spelling of 64794256782 in words is "sixty-four billion, seven hundred ninety-four million, two hundred fifty-six thousand, seven hundred eighty-two".