444202134432457 has 2 divisors, whose sum is σ = 444202134432458. Its totient is φ = 444202134432456.

The previous prime is 444202134432391. The next prime is 444202134432467. The reversal of 444202134432457 is 754234431202444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 422837133504016 + 21365000928441 = 20563004^2 + 4622229^2 .

It is a cyclic number.

It is not a de Polignac number, because 444202134432457 - 2²⁷ = 444202000214729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 444202134432457.

It is not a weakly prime, because it can be changed into another prime (444202134432467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222101067216228 + 222101067216229.

It is an arithmetic number, because the mean of its divisors is an integer number (222101067216229).

Almost surely, 2^{444202134432457} is an apocalyptic number.

It is an amenable number.

444202134432457 is a deficient number, since it is larger than the sum of its proper divisors (1).

444202134432457 is an equidigital number, since it uses as much as digits as its factorization.

444202134432457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10321920, while the sum is 49.

The spelling of 444202134432457 in words is "four hundred forty-four trillion, two hundred two billion, one hundred thirty-four million, four hundred thirty-two thousand, four hundred fifty-seven".