22356677779 has 4 divisors (see below), whose sum is σ = 22473728640. Its totient is φ = 22239626920.

The previous prime is 22356677771. The next prime is 22356677789. The reversal of 22356677779 is 97777665322.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97777665322 = 2 ⋅48888832661.

It is a cyclic number.

It is not a de Polignac number, because 22356677779 - 2³ = 22356677771 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22356677771) 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, 58525144 + ... + 58525525.

It is an arithmetic number, because the mean of its divisors is an integer number (5618432160).

Almost surely, 2^22356677779 is an apocalyptic number.

22356677779 is a deficient number, since it is larger than the sum of its proper divisors (117050861).

22356677779 is a wasteful number, since it uses less digits than its factorization.

22356677779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117050860.

The product of its digits is 46675440, while the sum is 61.

The spelling of 22356677779 in words is "twenty-two billion, three hundred fifty-six million, six hundred seventy-seven thousand, seven hundred seventy-nine".