42664246418 has 8 divisors (see below), whose sum is σ = 67760862012. Its totient is φ = 20077292416.

The previous prime is 42664246397. The next prime is 42664246421. The reversal of 42664246418 is 81464246624.

It can be written as a sum of positive squares in 2 ways, for example, as 40734137929 + 1930108489 = 201827^2 + 43933^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627415355 + ... + 627415422.

Almost surely, 2^42664246418 is an apocalyptic number.

42664246418 is a deficient number, since it is larger than the sum of its proper divisors (25096615594).

42664246418 is a wasteful number, since it uses less digits than its factorization.

42664246418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254830796.

The product of its digits is 1769472, while the sum is 47.

The spelling of 42664246418 in words is "forty-two billion, six hundred sixty-four million, two hundred forty-six thousand, four hundred eighteen".