22779513390797 has 4 divisors (see below), whose sum is σ = 23209315530300. Its totient is φ = 22349711251296.

The previous prime is 22779513390791. The next prime is 22779513390833. The reversal of 22779513390797 is 79709331597722.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11500468042756 + 11279045348041 = 3391234^2 + 3358429^2 .

It is a cyclic number.

It is not a de Polignac number, because 22779513390797 - 2³⁰ = 22778439648973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22779513390797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22779513390791) 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, 214901069672 + ... + 214901069777.

It is an arithmetic number, because the mean of its divisors is an integer number (5802328882575).

Almost surely, 2^{22779513390797} is an apocalyptic number.

It is an amenable number.

22779513390797 is a deficient number, since it is larger than the sum of its proper divisors (429802139503).

22779513390797 is an equidigital number, since it uses as much as digits as its factorization.

22779513390797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429802139502.

The product of its (nonzero) digits is 315059220, while the sum is 71.

The spelling of 22779513390797 in words is "twenty-two trillion, seven hundred seventy-nine billion, five hundred thirteen million, three hundred ninety thousand, seven hundred ninety-seven".