1421568194843 has 2 divisors, whose sum is σ = 1421568194844. Its totient is φ = 1421568194842.

The previous prime is 1421568194807. The next prime is 1421568194899. The reversal of 1421568194843 is 3484918651241.

It is an a-pointer prime, because the next prime (1421568194899) can be obtained adding 1421568194843 to its sum of digits (56).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1421568194843 - 2¹² = 1421568190747 is a prime.

It is a super-2 number, since 2×1421568194843² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1421568194803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710784097421 + 710784097422.

It is an arithmetic number, because the mean of its divisors is an integer number (710784097422).

Almost surely, 2^{1421568194843} is an apocalyptic number.

1421568194843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421568194843 is an equidigital number, since it uses as much as digits as its factorization.

1421568194843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6635520, while the sum is 56.

The spelling of 1421568194843 in words is "one trillion, four hundred twenty-one billion, five hundred sixty-eight million, one hundred ninety-four thousand, eight hundred forty-three".