943454578813 has 2 divisors, whose sum is σ = 943454578814. Its totient is φ = 943454578812.

The previous prime is 943454578783. The next prime is 943454578823. The reversal of 943454578813 is 318875454349.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 506768863129 + 436685715684 = 711877^2 + 660822^2 .

It is a cyclic number.

It is not a de Polignac number, because 943454578813 - 2²¹ = 943452481661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (943454578823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471727289406 + 471727289407.

It is an arithmetic number, because the mean of its divisors is an integer number (471727289407).

Almost surely, 2^943454578813 is an apocalyptic number.

It is an amenable number.

943454578813 is a deficient number, since it is larger than the sum of its proper divisors (1).

943454578813 is an equidigital number, since it uses as much as digits as its factorization.

943454578813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58060800, while the sum is 61.

The spelling of 943454578813 in words is "nine hundred forty-three billion, four hundred fifty-four million, five hundred seventy-eight thousand, eight hundred thirteen".