22511537149 has 4 divisors (see below), whose sum is σ = 22601224800. Its totient is φ = 22421849500.

The previous prime is 22511537047. The next prime is 22511537179. The reversal of 22511537149 is 94173511522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94173511522 = 2 ⋅47086755761.

It is a cyclic number.

It is not a de Polignac number, because 22511537149 - 2⁹ = 22511536637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22511537179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44843449 + ... + 44843950.

It is an arithmetic number, because the mean of its divisors is an integer number (5650306200).

Almost surely, 2^22511537149 is an apocalyptic number.

It is an amenable number.

22511537149 is a deficient number, since it is larger than the sum of its proper divisors (89687651).

22511537149 is an equidigital number, since it uses as much as digits as its factorization.

22511537149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89687650.

The product of its digits is 75600, while the sum is 40.

The spelling of 22511537149 in words is "twenty-two billion, five hundred eleven million, five hundred thirty-seven thousand, one hundred forty-nine".