402144427837 has 2 divisors, whose sum is σ = 402144427838. Its totient is φ = 402144427836.

The previous prime is 402144427829. The next prime is 402144427859. The reversal of 402144427837 is 738724441204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396571208121 + 5573219716 = 629739^2 + 74654^2 .

It is a cyclic number.

It is not a de Polignac number, because 402144427837 - 2³ = 402144427829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402144427037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201072213918 + 201072213919.

It is an arithmetic number, because the mean of its divisors is an integer number (201072213919).

Almost surely, 2^402144427837 is an apocalyptic number.

It is an amenable number.

402144427837 is a deficient number, since it is larger than the sum of its proper divisors (1).

402144427837 is an equidigital number, since it uses as much as digits as its factorization.

402144427837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1204224, while the sum is 46.

The spelling of 402144427837 in words is "four hundred two billion, one hundred forty-four million, four hundred twenty-seven thousand, eight hundred thirty-seven".