19810042716 has 48 divisors (see below), whose sum is σ = 47788167168. Its totient is φ = 6380472000.

The previous prime is 19810042711. The next prime is 19810042717. The reversal of 19810042716 is 61724001891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19810042711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202141 + ... + 283691.

It is an arithmetic number, because the mean of its divisors is an integer number (995586816).

Almost surely, 2^19810042716 is an apocalyptic number.

It is an amenable number.

19810042716 is an abundant number, since it is smaller than the sum of its proper divisors (27978124452).

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

19810042716 is a wasteful number, since it uses less digits than its factorization.

19810042716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82242 (or 82240 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 19810042716 in words is "nineteen billion, eight hundred ten million, forty-two thousand, seven hundred sixteen".