42991873783 has 2 divisors, whose sum is σ = 42991873784. Its totient is φ = 42991873782.

The previous prime is 42991873759. The next prime is 42991873807. The reversal of 42991873783 is 38737819924.

It is a balanced prime because it is at equal distance from previous prime (42991873759) and next prime (42991873807).

It is a cyclic number.

It is not a de Polignac number, because 42991873783 - 2⁵ = 42991873751 is a prime.

It is a super-2 number, since 2×42991873783² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42991873703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21495936891 + 21495936892.

It is an arithmetic number, because the mean of its divisors is an integer number (21495936892).

Almost surely, 2^42991873783 is an apocalyptic number.

42991873783 is a deficient number, since it is larger than the sum of its proper divisors (1).

42991873783 is an equidigital number, since it uses as much as digits as its factorization.

42991873783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18289152, while the sum is 61.

The spelling of 42991873783 in words is "forty-two billion, nine hundred ninety-one million, eight hundred seventy-three thousand, seven hundred eighty-three".