22554505631 has 4 divisors (see below), whose sum is σ = 25776577872. Its totient is φ = 19332433392.

The previous prime is 22554505627. The next prime is 22554505643. The reversal of 22554505631 is 13650545522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22554505631 - 2² = 22554505627 is a prime.

It is a super-2 number, since 2×22554505631² (a number of 22 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 (22554505601) 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 3 ways as a sum of consecutive naturals, for example, 1611036110 + ... + 1611036123.

It is an arithmetic number, because the mean of its divisors is an integer number (6444144468).

Almost surely, 2^22554505631 is an apocalyptic number.

22554505631 is a deficient number, since it is larger than the sum of its proper divisors (3222072241).

22554505631 is an equidigital number, since it uses as much as digits as its factorization.

22554505631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3222072240.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 22554505631 in words is "twenty-two billion, five hundred fifty-four million, five hundred five thousand, six hundred thirty-one".