22777987479 has 12 divisors (see below), whose sum is σ = 32886562536. Its totient is φ = 14017222752.

The previous prime is 22777987433. The next prime is 22777987481. The reversal of 22777987479 is 97478977722.

It is not a de Polignac number, because 22777987479 - 2¹¹ = 22777985431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22777983479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22462992 + ... + 22464005.

It is an arithmetic number, because the mean of its divisors is an integer number (2740546878).

Almost surely, 2^22777987479 is an apocalyptic number.

22777987479 is a deficient number, since it is larger than the sum of its proper divisors (10108575057).

22777987479 is a wasteful number, since it uses less digits than its factorization.

22777987479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44927026 (or 44927013 counting only the distinct ones).

The product of its digits is 174254976, while the sum is 69.

The spelling of 22777987479 in words is "twenty-two billion, seven hundred seventy-seven million, nine hundred eighty-seven thousand, four hundred seventy-nine".