22027759991 has 8 divisors (see below), whose sum is σ = 23198451120. Its totient is φ = 20858202432.

The previous prime is 22027759981. The next prime is 22027760003. The reversal of 22027759991 is 19995772022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22027759991 - 2¹⁴ = 22027743607 is a prime.

It is a super-2 number, since 2×22027759991² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22027759961) 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 7 ways as a sum of consecutive naturals, for example, 243350 + ... + 321363.

It is an arithmetic number, because the mean of its divisors is an integer number (2899806390).

Almost surely, 2^22027759991 is an apocalyptic number.

22027759991 is a deficient number, since it is larger than the sum of its proper divisors (1170691129).

22027759991 is a wasteful number, since it uses less digits than its factorization.

22027759991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566785.

The product of its (nonzero) digits is 1428840, while the sum is 53.

The spelling of 22027759991 in words is "twenty-two billion, twenty-seven million, seven hundred fifty-nine thousand, nine hundred ninety-one".