42641689984 has 16 divisors (see below), whose sum is σ = 84950242020. Its totient is φ = 21320844928.

The previous prime is 42641689967. The next prime is 42641690027. The reversal of 42641689984 is 48998614624.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166568974 + ... + 166569229.

Almost surely, 2^42641689984 is an apocalyptic number.

It is an amenable number.

42641689984 is a deficient number, since it is larger than the sum of its proper divisors (42308552036).

42641689984 is an equidigital number, since it uses as much as digits as its factorization.

42641689984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333138217 (or 333138205 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 61.

The spelling of 42641689984 in words is "forty-two billion, six hundred forty-one million, six hundred eighty-nine thousand, nine hundred eighty-four".