64022552779 has 4 divisors (see below), whose sum is σ = 67392160840. Its totient is φ = 60652944720.

The previous prime is 64022552771. The next prime is 64022552807. The reversal of 64022552779 is 97725522046.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 64022552779 - 2³ = 64022552771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64022552771) 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, 1684804002 + ... + 1684804039.

It is an arithmetic number, because the mean of its divisors is an integer number (16848040210).

Almost surely, 2^64022552779 is an apocalyptic number.

64022552779 is a deficient number, since it is larger than the sum of its proper divisors (3369608061).

64022552779 is a wasteful number, since it uses less digits than its factorization.

64022552779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369608060.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 64022552779 in words is "sixty-four billion, twenty-two million, five hundred fifty-two thousand, seven hundred seventy-nine".