463993642391 has 2 divisors, whose sum is σ = 463993642392. Its totient is φ = 463993642390.

The previous prime is 463993642289. The next prime is 463993642423. The reversal of 463993642391 is 193246399364.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-463993642391 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 463993642391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (463993642891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 231996821195 + 231996821196.

It is an arithmetic number, because the mean of its divisors is an integer number (231996821196).

Almost surely, 2^463993642391 is an apocalyptic number.

463993642391 is a deficient number, since it is larger than the sum of its proper divisors (1).

463993642391 is an equidigital number, since it uses as much as digits as its factorization.

463993642391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22674816, while the sum is 59.

The spelling of 463993642391 in words is "four hundred sixty-three billion, nine hundred ninety-three million, six hundred forty-two thousand, three hundred ninety-one".