43822419181213 has 2 divisors, whose sum is σ = 43822419181214. Its totient is φ = 43822419181212.

The previous prime is 43822419181193. The next prime is 43822419181259. The reversal of 43822419181213 is 31218191422834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41051532679609 + 2770886501604 = 6407147^2 + 1664598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43822419181213 is a prime.

It is a super-2 number, since 2×43822419181213² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43822419181273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21911209590606 + 21911209590607.

It is an arithmetic number, because the mean of its divisors is an integer number (21911209590607).

Almost surely, 2^{43822419181213} is an apocalyptic number.

It is an amenable number.

43822419181213 is a deficient number, since it is larger than the sum of its proper divisors (1).

43822419181213 is an equidigital number, since it uses as much as digits as its factorization.

43822419181213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 49.

The spelling of 43822419181213 in words is "forty-three trillion, eight hundred twenty-two billion, four hundred nineteen million, one hundred eighty-one thousand, two hundred thirteen".