244021140643 has 4 divisors (see below), whose sum is σ = 278881303600. Its totient is φ = 209160977688.

The previous prime is 244021140637. The next prime is 244021140679. The reversal of 244021140643 is 346041120442.

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 244021140643 - 2⁵ = 244021140611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (244021146643) 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, 17430081468 + ... + 17430081481.

It is an arithmetic number, because the mean of its divisors is an integer number (69720325900).

Almost surely, 2^244021140643 is an apocalyptic number.

244021140643 is a deficient number, since it is larger than the sum of its proper divisors (34860162957).

244021140643 is an equidigital number, since it uses as much as digits as its factorization.

244021140643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34860162956.

The product of its (nonzero) digits is 18432, while the sum is 31.

The spelling of 244021140643 in words is "two hundred forty-four billion, twenty-one million, one hundred forty thousand, six hundred forty-three".