22138100545 has 16 divisors (see below), whose sum is σ = 29262160512. Its totient is φ = 15944117760.

The previous prime is 22138100539. The next prime is 22138100561. The reversal of 22138100545 is 54500183122.

It is not a de Polignac number, because 22138100545 - 2⁵ = 22138100513 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1948272 + ... + 1959601.

It is an arithmetic number, because the mean of its divisors is an integer number (1828885032).

Almost surely, 2^22138100545 is an apocalyptic number.

It is an amenable number.

22138100545 is a deficient number, since it is larger than the sum of its proper divisors (7124059967).

22138100545 is a wasteful number, since it uses less digits than its factorization.

22138100545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907992.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 22138100545 its reverse (54500183122), we get a palindrome (76638283667).

The spelling of 22138100545 in words is "twenty-two billion, one hundred thirty-eight million, one hundred thousand, five hundred forty-five".