423440012203919 has 2 divisors, whose sum is σ = 423440012203920. Its totient is φ = 423440012203918.

The previous prime is 423440012203913. The next prime is 423440012203961. The reversal of 423440012203919 is 919302210044324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423440012203919 - 2¹² = 423440012199823 is a prime.

It is a super-2 number, since 2×423440012203919² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 423440012203919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423440012203913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211720006101959 + 211720006101960.

It is an arithmetic number, because the mean of its divisors is an integer number (211720006101960).

Almost surely, 2^{423440012203919} is an apocalyptic number.

423440012203919 is a deficient number, since it is larger than the sum of its proper divisors (1).

423440012203919 is an equidigital number, since it uses as much as digits as its factorization.

423440012203919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 423440012203919 in words is "four hundred twenty-three trillion, four hundred forty billion, twelve million, two hundred three thousand, nine hundred nineteen".