64682057779 has 8 divisors (see below), whose sum is σ = 64920990960. Its totient is φ = 64443187200.

The previous prime is 64682057773. The next prime is 64682057801. The reversal of 64682057779 is 97775028646.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64682057779 - 2⁷ = 64682057651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64682057773) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3443844 + ... + 3462574.

It is an arithmetic number, because the mean of its divisors is an integer number (8115123870).

Almost surely, 2^64682057779 is an apocalyptic number.

64682057779 is a deficient number, since it is larger than the sum of its proper divisors (238933181).

64682057779 is a wasteful number, since it uses less digits than its factorization.

64682057779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31301.

The product of its (nonzero) digits is 35562240, while the sum is 61.

The spelling of 64682057779 in words is "sixty-four billion, six hundred eighty-two million, fifty-seven thousand, seven hundred seventy-nine".