22245738078643 has 4 divisors (see below), whose sum is σ = 22245789841288. Its totient is φ = 22245686316000.

The previous prime is 22245738078581. The next prime is 22245738078647. The reversal of 22245738078643 is 34687083754222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22245738078643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22245738078647) 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, 25231233 + ... + 26098018.

It is an arithmetic number, because the mean of its divisors is an integer number (5561447460322).

Almost surely, 2^{22245738078643} is an apocalyptic number.

22245738078643 is a deficient number, since it is larger than the sum of its proper divisors (51762645).

22245738078643 is an equidigital number, since it uses as much as digits as its factorization.

22245738078643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51762644.

The product of its (nonzero) digits is 108380160, while the sum is 61.

The spelling of 22245738078643 in words is "twenty-two trillion, two hundred forty-five billion, seven hundred thirty-eight million, seventy-eight thousand, six hundred forty-three".