19681580004 has 24 divisors (see below), whose sum is σ = 46080431040. Its totient is φ = 6538134624.

The previous prime is 19681579969. The next prime is 19681580041. The reversal of 19681580004 is 40008518691.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2795344 + ... + 2802375.

It is an arithmetic number, because the mean of its divisors is an integer number (1920017960).

Almost surely, 2^19681580004 is an apocalyptic number.

It is an amenable number.

19681580004 is an abundant number, since it is smaller than the sum of its proper divisors (26398851036).

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

19681580004 is a wasteful number, since it uses less digits than its factorization.

19681580004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598019 (or 5598017 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The spelling of 19681580004 in words is "nineteen billion, six hundred eighty-one million, five hundred eighty thousand, four".