244140023861 has 2 divisors, whose sum is σ = 244140023862. Its totient is φ = 244140023860.

The previous prime is 244140023857. The next prime is 244140023899. The reversal of 244140023861 is 168320041442.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243063790225 + 1076233636 = 493015^2 + 32806^2 .

It is a cyclic number.

It is not a de Polignac number, because 244140023861 - 2² = 244140023857 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244140023261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122070011930 + 122070011931.

It is an arithmetic number, because the mean of its divisors is an integer number (122070011931).

Almost surely, 2^244140023861 is an apocalyptic number.

It is an amenable number.

244140023861 is a deficient number, since it is larger than the sum of its proper divisors (1).

244140023861 is an equidigital number, since it uses as much as digits as its factorization.

244140023861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 35.

The spelling of 244140023861 in words is "two hundred forty-four billion, one hundred forty million, twenty-three thousand, eight hundred sixty-one".