42647656238 has 8 divisors (see below), whose sum is σ = 69787073880. Its totient is φ = 19385298280.

The previous prime is 42647656211. The next prime is 42647656349. The reversal of 42647656238 is 83265674624.

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

It is a self number, because there is not a number n which added to its sum of digits gives 42647656238.

It is a congruent number.

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, 969264893 + ... + 969264936.

It is an arithmetic number, because the mean of its divisors is an integer number (8723384235).

Almost surely, 2^42647656238 is an apocalyptic number.

42647656238 is a deficient number, since it is larger than the sum of its proper divisors (27139417642).

42647656238 is a wasteful number, since it uses less digits than its factorization.

42647656238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938529842.

The product of its digits is 11612160, while the sum is 53.

The spelling of 42647656238 in words is "forty-two billion, six hundred forty-seven million, six hundred fifty-six thousand, two hundred thirty-eight".