42774934918 has 4 divisors (see below), whose sum is σ = 64162402380. Its totient is φ = 21387467458.

The previous prime is 42774934889. The next prime is 42774934919. The reversal of 42774934918 is 81943947724.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42774934919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10693733728 + ... + 10693733731.

It is an arithmetic number, because the mean of its divisors is an integer number (16040600595).

Almost surely, 2^42774934918 is an apocalyptic number.

42774934918 is a deficient number, since it is larger than the sum of its proper divisors (21387467462).

42774934918 is a wasteful number, since it uses less digits than its factorization.

42774934918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21387467461.

The product of its digits is 12192768, while the sum is 58.

The spelling of 42774934918 in words is "forty-two billion, seven hundred seventy-four million, nine hundred thirty-four thousand, nine hundred eighteen".