22015240246643 has 4 divisors (see below), whose sum is σ = 25160274567600. Its totient is φ = 18870205925688.

The previous prime is 22015240246583. The next prime is 22015240246693. The reversal of 22015240246643 is 34664204251022.

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

It is a cyclic number.

It is not a de Polignac number, because 22015240246643 - 2¹⁸ = 22015239984499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22015240246643.

It is not an unprimeable number, because it can be changed into a prime (22015240246693) 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, 1572517160468 + ... + 1572517160481.

It is an arithmetic number, because the mean of its divisors is an integer number (6290068641900).

Almost surely, 2^{22015240246643} is an apocalyptic number.

22015240246643 is a deficient number, since it is larger than the sum of its proper divisors (3145034320957).

22015240246643 is an equidigital number, since it uses as much as digits as its factorization.

22015240246643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145034320956.

The product of its (nonzero) digits is 552960, while the sum is 41.

Adding to 22015240246643 its reverse (34664204251022), we get a palindrome (56679444497665).

The spelling of 22015240246643 in words is "twenty-two trillion, fifteen billion, two hundred forty million, two hundred forty-six thousand, six hundred forty-three".