19779165604675 has 6 divisors (see below), whose sum is σ = 24526165349828. Its totient is φ = 15823332483720.

The previous prime is 19779165604673. The next prime is 19779165604691. The reversal of 19779165604675 is 57640656197791.

It is not a de Polignac number, because 19779165604675 - 2¹ = 19779165604673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19779165604598 and 19779165604607.

It is not an unprimeable number, because it can be changed into a prime (19779165604673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 395583312069 + ... + 395583312118.

Almost surely, 2^{19779165604675} is an apocalyptic number.

19779165604675 is a deficient number, since it is larger than the sum of its proper divisors (4746999745153).

19779165604675 is an equidigital number, since it uses as much as digits as its factorization.

19779165604675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791166624197 (or 791166624192 counting only the distinct ones).

The product of its (nonzero) digits is 600112800, while the sum is 73.

The spelling of 19779165604675 in words is "nineteen trillion, seven hundred seventy-nine billion, one hundred sixty-five million, six hundred four thousand, six hundred seventy-five".