19960334909 has 4 divisors (see below), whose sum is σ = 20061656604. Its totient is φ = 19859013216.

The previous prime is 19960334897. The next prime is 19960334923. The reversal of 19960334909 is 90943306991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90943306991 = 183797 ⋅494803.

It can be written as a sum of positive squares in 2 ways, for example, as 14932106809 + 5028228100 = 122197^2 + 70910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19960334909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19960334609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50660552 + ... + 50660945.

It is an arithmetic number, because the mean of its divisors is an integer number (5015414151).

Almost surely, 2^19960334909 is an apocalyptic number.

It is an amenable number.

19960334909 is a deficient number, since it is larger than the sum of its proper divisors (101321695).

19960334909 is a wasteful number, since it uses less digits than its factorization.

19960334909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101321694.

The product of its (nonzero) digits is 1417176, while the sum is 53.

The spelling of 19960334909 in words is "nineteen billion, nine hundred sixty million, three hundred thirty-four thousand, nine hundred nine".