244142243641 has 4 divisors (see below), whose sum is σ = 245898662800. Its totient is φ = 242385824484.

The previous prime is 244142243621. The next prime is 244142243731. The reversal of 244142243641 is 146342241442.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 244142243641 - 2¹⁷ = 244142112569 is a prime.

It is a super-2 number, since 2×244142243641² (a number of 24 digits) contains 22 as substring.

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 244142243641.

It is not an unprimeable number, because it can be changed into a prime (244142243621) 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, 878209371 + ... + 878209648.

It is an arithmetic number, because the mean of its divisors is an integer number (61474665700).

Almost surely, 2^244142243641 is an apocalyptic number.

It is an amenable number.

244142243641 is a deficient number, since it is larger than the sum of its proper divisors (1756419159).

244142243641 is a wasteful number, since it uses less digits than its factorization.

244142243641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756419158.

The product of its digits is 147456, while the sum is 37.

The spelling of 244142243641 in words is "two hundred forty-four billion, one hundred forty-two million, two hundred forty-three thousand, six hundred forty-one".