22969531778 has 18 divisors (see below), whose sum is σ = 35611880553. Its totient is φ = 11111074560.

The previous prime is 22969531771. The next prime is 22969531787. The reversal of 22969531778 is 87713596922.

It can be written as a sum of positive squares in 2 ways, for example, as 14222232049 + 8747299729 = 119257^2 + 93527^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=107167.

It is a super-4 number, since 4×22969531778⁴ (a number of 43 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22969531771) 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 8 ways as a sum of consecutive naturals, for example, 6642626 + ... + 6646082.

Almost surely, 2^22969531778 is an apocalyptic number.

22969531778 is a deficient number, since it is larger than the sum of its proper divisors (12642348775).

22969531778 is an frugal number, since it uses more digits than its factorization.

22969531778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6978 (or 3490 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 59.

The spelling of 22969531778 in words is "twenty-two billion, nine hundred sixty-nine million, five hundred thirty-one thousand, seven hundred seventy-eight".