19779575683 has 16 divisors (see below), whose sum is σ = 23150638080. Its totient is φ = 16549596000.

The previous prime is 19779575671. The next prime is 19779575689. The reversal of 19779575683 is 38657597791.

It is a happy number.

It is not a de Polignac number, because 19779575683 - 2⁹ = 19779575171 is a prime.

It is a super-2 number, since 2×19779575683² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19779575689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146823 + ... + 247216.

It is an arithmetic number, because the mean of its divisors is an integer number (1446914880).

Almost surely, 2^19779575683 is an apocalyptic number.

19779575683 is a deficient number, since it is larger than the sum of its proper divisors (3371062397).

19779575683 is a wasteful number, since it uses less digits than its factorization.

19779575683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394218.

The product of its digits is 100018800, while the sum is 67.

The spelling of 19779575683 in words is "nineteen billion, seven hundred seventy-nine million, five hundred seventy-five thousand, six hundred eighty-three".