444202134432391 has 2 divisors, whose sum is σ = 444202134432392. Its totient is φ = 444202134432390.

The previous prime is 444202134432361. The next prime is 444202134432457. The reversal of 444202134432391 is 193234431202444.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 444202134432391 - 2⁷ = 444202134432263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (444202134432361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222101067216195 + 222101067216196.

It is an arithmetic number, because the mean of its divisors is an integer number (222101067216196).

Almost surely, 2^{444202134432391} is an apocalyptic number.

444202134432391 is a deficient number, since it is larger than the sum of its proper divisors (1).

444202134432391 is an equidigital number, since it uses as much as digits as its factorization.

444202134432391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1990656, while the sum is 46.

The spelling of 444202134432391 in words is "four hundred forty-four trillion, two hundred two billion, one hundred thirty-four million, four hundred thirty-two thousand, three hundred ninety-one".