22529740861 has 4 divisors (see below), whose sum is σ = 22530061372. Its totient is φ = 22529420352.

The previous prime is 22529740843. The next prime is 22529740897. The reversal of 22529740861 is 16804792522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 10715355225 + 11814385636 = 103515^2 + 108694^2 .

It is a cyclic number.

It is not a de Polignac number, because 22529740861 - 2⁷ = 22529740733 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 (22529740801) 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, 4086 + ... + 212311.

It is an arithmetic number, because the mean of its divisors is an integer number (5632515343).

Almost surely, 2^22529740861 is an apocalyptic number.

It is an amenable number.

22529740861 is a deficient number, since it is larger than the sum of its proper divisors (320511).

22529740861 is a wasteful number, since it uses less digits than its factorization.

22529740861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320510.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 22529740861 in words is "twenty-two billion, five hundred twenty-nine million, seven hundred forty thousand, eight hundred sixty-one".