22726331551 has 16 divisors (see below), whose sum is σ = 28398712320. Its totient is φ = 17668464480.

The previous prime is 22726331521. The next prime is 22726331581. The reversal of 22726331551 is 15513362722.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22726331521) and next prime (22726331581).

It is a cyclic number.

It is not a de Polignac number, because 22726331551 - 2⁷ = 22726331423 is a prime.

It is a super-2 number, since 2×22726331551² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22726331551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22726331501) 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 15 ways as a sum of consecutive naturals, for example, 302356 + ... + 369961.

It is an arithmetic number, because the mean of its divisors is an integer number (1774919520).

Almost surely, 2^22726331551 is an apocalyptic number.

22726331551 is a deficient number, since it is larger than the sum of its proper divisors (5672380769).

22726331551 is a wasteful number, since it uses less digits than its factorization.

22726331551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672774.

The product of its digits is 75600, while the sum is 37.

The spelling of 22726331551 in words is "twenty-two billion, seven hundred twenty-six million, three hundred thirty-one thousand, five hundred fifty-one".