64723600079 has 2 divisors, whose sum is σ = 64723600080. Its totient is φ = 64723600078.

The previous prime is 64723600061. The next prime is 64723600127. The reversal of 64723600079 is 97000632746.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64723600079 - 2⁸ = 64723599823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64723600049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32361800039 + 32361800040.

It is an arithmetic number, because the mean of its divisors is an integer number (32361800040).

Almost surely, 2^64723600079 is an apocalyptic number.

64723600079 is a deficient number, since it is larger than the sum of its proper divisors (1).

64723600079 is an equidigital number, since it uses as much as digits as its factorization.

64723600079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 44.

The spelling of 64723600079 in words is "sixty-four billion, seven hundred twenty-three million, six hundred thousand, seventy-nine".