22729772517 has 16 divisors (see below), whose sum is σ = 31628330880. Its totient is φ = 14492377152.

The previous prime is 22729772503. The next prime is 22729772519. The reversal of 22729772517 is 71527792722.

It is a happy number.

It is not a de Polignac number, because 22729772517 - 2⁴ = 22729772501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22729772517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22729772519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622359 + ... + 657867.

It is an arithmetic number, because the mean of its divisors is an integer number (1976770680).

Almost surely, 2^22729772517 is an apocalyptic number.

It is an amenable number.

22729772517 is a deficient number, since it is larger than the sum of its proper divisors (8898558363).

22729772517 is a wasteful number, since it uses less digits than its factorization.

22729772517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44812.

The product of its digits is 1728720, while the sum is 51.

The spelling of 22729772517 in words is "twenty-two billion, seven hundred twenty-nine million, seven hundred seventy-two thousand, five hundred seventeen".