22640446079 has 4 divisors (see below), whose sum is σ = 22790382960. Its totient is φ = 22490509200.

The previous prime is 22640446067. The next prime is 22640446109. The reversal of 22640446079 is 97064404622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97064404622 = 2 ⋅48532202311.

It is a cyclic number.

It is not a de Polignac number, because 22640446079 - 2⁸ = 22640445823 is a prime.

It is a super-2 number, since 2×22640446079² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22640440079) 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, 74968214 + ... + 74968515.

It is an arithmetic number, because the mean of its divisors is an integer number (5697595740).

Almost surely, 2^22640446079 is an apocalyptic number.

22640446079 is a deficient number, since it is larger than the sum of its proper divisors (149936881).

22640446079 is a wasteful number, since it uses less digits than its factorization.

22640446079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149936880.

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 22640446079 in words is "twenty-two billion, six hundred forty million, four hundred forty-six thousand, seventy-nine".