17821853042 has 16 divisors (see below), whose sum is σ = 30596892480. Its totient is φ = 7626650928.

The previous prime is 17821852991. The next prime is 17821853047. The reversal of 17821853042 is 24035812871.

It is not an unprimeable number, because it can be changed into a prime (17821853047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 930692 + ... + 949647.

It is an arithmetic number, because the mean of its divisors is an integer number (1912305780).

Almost surely, 2^17821853042 is an apocalyptic number.

17821853042 is a deficient number, since it is larger than the sum of its proper divisors (12775039438).

17821853042 is a wasteful number, since it uses less digits than its factorization.

17821853042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881025.

The product of its (nonzero) digits is 107520, while the sum is 41.

The spelling of 17821853042 in words is "seventeen billion, eight hundred twenty-one million, eight hundred fifty-three thousand, forty-two".