42774934919 has 2 divisors, whose sum is σ = 42774934920. Its totient is φ = 42774934918.

The previous prime is 42774934889. The next prime is 42774934933. The reversal of 42774934919 is 91943947724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42774934919 - 2¹⁶ = 42774869383 is a prime.

It is a super-2 number, since 2×42774934919² (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 (42774934619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21387467459 + 21387467460.

It is an arithmetic number, because the mean of its divisors is an integer number (21387467460).

Almost surely, 2^42774934919 is an apocalyptic number.

42774934919 is a deficient number, since it is larger than the sum of its proper divisors (1).

42774934919 is an equidigital number, since it uses as much as digits as its factorization.

42774934919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13716864, while the sum is 59.

The spelling of 42774934919 in words is "forty-two billion, seven hundred seventy-four million, nine hundred thirty-four thousand, nine hundred nineteen".