42774831879 has 24 divisors (see below), whose sum is σ = 64823077872. Its totient is φ = 24937545600.

The previous prime is 42774831871. The next prime is 42774831949. The reversal of 42774831879 is 97813847724.

It is not a de Polignac number, because 42774831879 - 2³ = 42774831871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42774831871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1505022 + ... + 1533179.

It is an arithmetic number, because the mean of its divisors is an integer number (2700961578).

Almost surely, 2^42774831879 is an apocalyptic number.

42774831879 is a deficient number, since it is larger than the sum of its proper divisors (22048245993).

42774831879 is a wasteful number, since it uses less digits than its factorization.

42774831879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3038255 (or 3038236 counting only the distinct ones).

The product of its digits is 18966528, while the sum is 60.

The spelling of 42774831879 in words is "forty-two billion, seven hundred seventy-four million, eight hundred thirty-one thousand, eight hundred seventy-nine".