42743814881 has 2 divisors, whose sum is σ = 42743814882. Its totient is φ = 42743814880.

The previous prime is 42743814863. The next prime is 42743814889. The reversal of 42743814881 is 18841834724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29050134481 + 13693680400 = 170441^2 + 117020^2 .

It is a cyclic number.

It is not a de Polignac number, because 42743814881 - 2¹⁴ = 42743798497 is a prime.

It is a super-2 number, since 2×42743814881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42743814889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21371907440 + 21371907441.

It is an arithmetic number, because the mean of its divisors is an integer number (21371907441).

Almost surely, 2^42743814881 is an apocalyptic number.

It is an amenable number.

42743814881 is a deficient number, since it is larger than the sum of its proper divisors (1).

42743814881 is an equidigital number, since it uses as much as digits as its factorization.

42743814881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1376256, while the sum is 50.

The spelling of 42743814881 in words is "forty-two billion, seven hundred forty-three million, eight hundred fourteen thousand, eight hundred eighty-one".