41664021858 has 48 divisors (see below), whose sum is σ = 91844064000. Its totient is φ = 13646374560.

The previous prime is 41664021857. The next prime is 41664021859. The reversal of 41664021858 is 85812046614.

It is a happy number.

41664021858 is a `hidden beast` number, since 4 + 1 + 66 + 402 + 185 + 8 = 666.

41664021858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (41664021857) and next prime (41664021859).

It is not an unprimeable number, because it can be changed into a prime (41664021851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2699343 + ... + 2714733.

It is an arithmetic number, because the mean of its divisors is an integer number (1913418000).

Almost surely, 2^41664021858 is an apocalyptic number.

41664021858 is an abundant number, since it is smaller than the sum of its proper divisors (50180042142).

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

41664021858 is a wasteful number, since it uses less digits than its factorization.

41664021858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18007 (or 18004 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 41664021858 in words is "forty-one billion, six hundred sixty-four million, twenty-one thousand, eight hundred fifty-eight".