22251242440445 has 16 divisors (see below), whose sum is σ = 27106572052080. Its totient is φ = 17532496379904.

The previous prime is 22251242440429. The next prime is 22251242440517. The reversal of 22251242440445 is 54404424215222.

It can be written as a sum of positive squares in 8 ways, for example, as 86232671716 + 22165009768729 = 293654^2 + 4707973^2 .

It is not a de Polignac number, because 22251242440445 - 2⁴ = 22251242440429 is a prime.

It is a congruent 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, 97167332 + ... + 97396061.

It is an arithmetic number, because the mean of its divisors is an integer number (1694160753255).

Almost surely, 2^{22251242440445} is an apocalyptic number.

It is an amenable number.

22251242440445 is a deficient number, since it is larger than the sum of its proper divisors (4855329611635).

22251242440445 is a wasteful number, since it uses less digits than its factorization.

22251242440445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194563744.

The product of its (nonzero) digits is 819200, while the sum is 41.

Adding to 22251242440445 its reverse (54404424215222), we get a palindrome (76655666655667).

The spelling of 22251242440445 in words is "twenty-two trillion, two hundred fifty-one billion, two hundred forty-two million, four hundred forty thousand, four hundred forty-five".