14293445806781 has 2 divisors, whose sum is σ = 14293445806782. Its totient is φ = 14293445806780.

The previous prime is 14293445806741. The next prime is 14293445806823. The reversal of 14293445806781 is 18760854439241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14273971604281 + 19474202500 = 3778091^2 + 139550^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14293445806781 is a prime.

It is a super-2 number, since 2×14293445806781² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14293445806711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7146722903390 + 7146722903391.

It is an arithmetic number, because the mean of its divisors is an integer number (7146722903391).

It is a 1-persistent number, because it is pandigital, but 2⋅14293445806781 = 28586891613562 is not.

Almost surely, 2^{14293445806781} is an apocalyptic number.

It is an amenable number.

14293445806781 is a deficient number, since it is larger than the sum of its proper divisors (1).

14293445806781 is an equidigital number, since it uses as much as digits as its factorization.

14293445806781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46448640, while the sum is 62.

The spelling of 14293445806781 in words is "fourteen trillion, two hundred ninety-three billion, four hundred forty-five million, eight hundred six thousand, seven hundred eighty-one".