19799050061 has 8 divisors (see below), whose sum is σ = 22847170944. Its totient is φ = 16805850480.

The previous prime is 19799050009. The next prime is 19799050069. The reversal of 19799050061 is 16005099791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19799050061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 19799049988 and 19799050015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19799050069) by changing a digit.

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, 13729550 + ... + 13730991.

It is an arithmetic number, because the mean of its divisors is an integer number (2855896368).

Almost surely, 2^19799050061 is an apocalyptic number.

It is an amenable number.

19799050061 is a deficient number, since it is larger than the sum of its proper divisors (3048120883).

19799050061 is a wasteful number, since it uses less digits than its factorization.

19799050061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27460651.

The product of its (nonzero) digits is 153090, while the sum is 47.

The spelling of 19799050061 in words is "nineteen billion, seven hundred ninety-nine million, fifty thousand, sixty-one".