42606665616 has 40 divisors (see below), whose sum is σ = 116541764064. Its totient is φ = 13366796800.

The previous prime is 42606665581. The next prime is 42606665657. The reversal of 42606665616 is 61656660624.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 26106210 + ... + 26107841.

Almost surely, 2^42606665616 is an apocalyptic number.

It is an amenable number.

42606665616 is an abundant number, since it is smaller than the sum of its proper divisors (73935098448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42606665616 is a wasteful number, since it uses less digits than its factorization.

42606665616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52214079 (or 52214073 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 42606665616 in words is "forty-two billion, six hundred six million, six hundred sixty-five thousand, six hundred sixteen".