22031550045 has 28 divisors (see below), whose sum is σ = 39638663676. Its totient is φ = 11750158080.

The previous prime is 22031550043. The next prime is 22031550071. The reversal of 22031550045 is 54005513022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11845492569 + 10186057476 = 108837^2 + 100926^2 .

It is not a de Polignac number, because 22031550045 - 2¹ = 22031550043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031550043) 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 27 ways as a sum of consecutive naturals, for example, 3018516 + ... + 3025805.

Almost surely, 2^22031550045 is an apocalyptic number.

It is an amenable number.

22031550045 is a deficient number, since it is larger than the sum of its proper divisors (17607113631).

22031550045 is an frugal number, since it uses more digits than its factorization.

22031550045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6044344 (or 6044329 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 22031550045 in words is "twenty-two billion, thirty-one million, five hundred fifty thousand, forty-five".