19812442712 has 32 divisors (see below), whose sum is σ = 37511871120. Its totient is φ = 9809358720.

The previous prime is 19812442709. The next prime is 19812442733. The reversal of 19812442712 is 21724421891.

It is a super-3 number, since 3×19812442712³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19812442712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3007262 + ... + 3013842.

Almost surely, 2^19812442712 is an apocalyptic number.

It is an amenable number.

19812442712 is a deficient number, since it is larger than the sum of its proper divisors (17699428408).

19812442712 is a wasteful number, since it uses less digits than its factorization.

19812442712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10211 (or 10207 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The spelling of 19812442712 in words is "nineteen billion, eight hundred twelve million, four hundred forty-two thousand, seven hundred twelve".