19969277896 has 64 divisors (see below), whose sum is σ = 38380780800. Its totient is φ = 9738183168.

The previous prime is 19969277869. The next prime is 19969277899. The reversal of 19969277896 is 69877296991.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (73).

It is not an unprimeable number, because it can be changed into a prime (19969277899) 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, 24146235 + ... + 24147061.

It is an arithmetic number, because the mean of its divisors is an integer number (599699700).

Almost surely, 2^19969277896 is an apocalyptic number.

It is an amenable number.

19969277896 is a deficient number, since it is larger than the sum of its proper divisors (18411502904).

19969277896 is a wasteful number, since it uses less digits than its factorization.

19969277896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318 (or 1314 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 73.

The spelling of 19969277896 in words is "nineteen billion, nine hundred sixty-nine million, two hundred seventy-seven thousand, eight hundred ninety-six".