42116656915 has 4 divisors (see below), whose sum is σ = 50539988304. Its totient is φ = 33693325528.

The previous prime is 42116656889. The next prime is 42116656943. The reversal of 42116656915 is 51965661124.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42116656915 - 2⁹ = 42116656403 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4211665687 + ... + 4211665696.

It is an arithmetic number, because the mean of its divisors is an integer number (12634997076).

Almost surely, 2^42116656915 is an apocalyptic number.

42116656915 is a deficient number, since it is larger than the sum of its proper divisors (8423331389).

42116656915 is an equidigital number, since it uses as much as digits as its factorization.

42116656915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8423331388.

The product of its digits is 388800, while the sum is 46.

The spelling of 42116656915 in words is "forty-two billion, one hundred sixteen million, six hundred fifty-six thousand, nine hundred fifteen".