22246913578 has 8 divisors (see below), whose sum is σ = 33372942372. Its totient is φ = 11122599456.

The previous prime is 22246913573. The next prime is 22246913587. The reversal of 22246913578 is 87531964222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22008612609 + 238300969 = 148353^2 + 15437^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (22246913573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 395725 + ... + 448432.

Almost surely, 2^22246913578 is an apocalyptic number.

22246913578 is a deficient number, since it is larger than the sum of its proper divisors (11126028794).

22246913578 is a wasteful number, since it uses less digits than its factorization.

22246913578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857336.

The product of its digits is 1451520, while the sum is 49.

The spelling of 22246913578 in words is "twenty-two billion, two hundred forty-six million, nine hundred thirteen thousand, five hundred seventy-eight".