42774940581 has 8 divisors (see below), whose sum is σ = 57245274720. Its totient is φ = 28410616752.

The previous prime is 42774940577. The next prime is 42774940589. The reversal of 42774940581 is 18504947724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42774940581 - 2² = 42774940577 is a prime.

It is a super-2 number, since 2×42774940581² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) 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 (42774940589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26501635 + ... + 26503248.

It is an arithmetic number, because the mean of its divisors is an integer number (7155659340).

Almost surely, 2^42774940581 is an apocalyptic number.

It is an amenable number.

42774940581 is a deficient number, since it is larger than the sum of its proper divisors (14470334139).

42774940581 is a wasteful number, since it uses less digits than its factorization.

42774940581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53005155.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 42774940581 in words is "forty-two billion, seven hundred seventy-four million, nine hundred forty thousand, five hundred eighty-one".