19779359601 has 8 divisors (see below), whose sum is σ = 26985793120. Its totient is φ = 12879582912.

The previous prime is 19779359591. The next prime is 19779359609. The reversal of 19779359601 is 10695397791.

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

It is not a de Polignac number, because 19779359601 - 2⁵ = 19779359569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19779359609) 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, 76664056 + ... + 76664313.

It is an arithmetic number, because the mean of its divisors is an integer number (3373224140).

Almost surely, 2^19779359601 is an apocalyptic number.

It is an amenable number.

19779359601 is a deficient number, since it is larger than the sum of its proper divisors (7206433519).

19779359601 is a wasteful number, since it uses less digits than its factorization.

19779359601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153328415.

The product of its (nonzero) digits is 3214890, while the sum is 57.

The spelling of 19779359601 in words is "nineteen billion, seven hundred seventy-nine million, three hundred fifty-nine thousand, six hundred one".