22776609312 has 54 divisors (see below), whose sum is σ = 64778266917. Its totient is φ = 7591349376.

The previous prime is 22776609253. The next prime is 22776609313. The reversal of 22776609312 is 21390667722.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

22776609312 is a `hidden beast` number, since 2 + 2 + 7 + 7 + 6 + 609 + 31 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19186682256 + 3589927056 = 138516^2 + 59916^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106716.

It is a super-2 number, since 2×22776609312² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22776609313) 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, 2556738 + ... + 2565630.

Almost surely, 2^22776609312 is an apocalyptic number.

It is an amenable number.

22776609312 is an abundant number, since it is smaller than the sum of its proper divisors (42001657605).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22776609312 is an frugal number, since it uses more digits than its factorization.

22776609312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17802 (or 8898 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 22776609312 in words is "twenty-two billion, seven hundred seventy-six million, six hundred nine thousand, three hundred twelve".