64812240579 has 4 divisors (see below), whose sum is σ = 86416320776. Its totient is φ = 43208160384.

The previous prime is 64812240553. The next prime is 64812240601. The reversal of 64812240579 is 97504221846.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 64812240579 - 2⁹ = 64812240067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64812240979) 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 3 ways as a sum of consecutive naturals, for example, 10802040094 + ... + 10802040099.

It is an arithmetic number, because the mean of its divisors is an integer number (21604080194).

Almost surely, 2^64812240579 is an apocalyptic number.

64812240579 is a deficient number, since it is larger than the sum of its proper divisors (21604080197).

64812240579 is a wasteful number, since it uses less digits than its factorization.

64812240579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21604080196.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 64812240579 in words is "sixty-four billion, eight hundred twelve million, two hundred forty thousand, five hundred seventy-nine".