42644223051 has 4 divisors (see below), whose sum is σ = 56858964072. Its totient is φ = 28429482032.

The previous prime is 42644222981. The next prime is 42644223101. The reversal of 42644223051 is 15032244624.

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 42644223051 - 2¹⁴ = 42644206667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42644203051) 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, 7107370506 + ... + 7107370511.

It is an arithmetic number, because the mean of its divisors is an integer number (14214741018).

Almost surely, 2^42644223051 is an apocalyptic number.

42644223051 is a deficient number, since it is larger than the sum of its proper divisors (14214741021).

42644223051 is a wasteful number, since it uses less digits than its factorization.

42644223051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14214741020.

The product of its (nonzero) digits is 46080, while the sum is 33.

Adding to 42644223051 its reverse (15032244624), we get a palindrome (57676467675).

The spelling of 42644223051 in words is "forty-two billion, six hundred forty-four million, two hundred twenty-three thousand, fifty-one".