19445893227463 has 2 divisors, whose sum is σ = 19445893227464. Its totient is φ = 19445893227462.

The previous prime is 19445893227461. The next prime is 19445893227469. The reversal of 19445893227463 is 36472239854491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19445893227463 - 2¹ = 19445893227461 is a prime.

Together with 19445893227461, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19445893227461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9722946613731 + 9722946613732.

It is an arithmetic number, because the mean of its divisors is an integer number (9722946613732).

Almost surely, 2^{19445893227463} is an apocalyptic number.

19445893227463 is a deficient number, since it is larger than the sum of its proper divisors (1).

19445893227463 is an equidigital number, since it uses as much as digits as its factorization.

19445893227463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 313528320, while the sum is 67.

The spelling of 19445893227463 in words is "nineteen trillion, four hundred forty-five billion, eight hundred ninety-three million, two hundred twenty-seven thousand, four hundred sixty-three".