22149946639 has 8 divisors (see below), whose sum is σ = 22250926080. Its totient is φ = 22049036856.

The previous prime is 22149946633. The next prime is 22149946661. The reversal of 22149946639 is 93664994122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22149946639 - 2³ = 22149946631 is a prime.

It is a super-2 number, since 2×22149946639² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22149946639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22149946631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683722 + ... + 715384.

It is an arithmetic number, because the mean of its divisors is an integer number (2781365760).

Almost surely, 2^22149946639 is an apocalyptic number.

22149946639 is a deficient number, since it is larger than the sum of its proper divisors (100979441).

22149946639 is a wasteful number, since it uses less digits than its factorization.

22149946639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34829.

The product of its digits is 5038848, while the sum is 55.

The spelling of 22149946639 in words is "twenty-two billion, one hundred forty-nine million, nine hundred forty-six thousand, six hundred thirty-nine".