19675679823 has 6 divisors (see below), whose sum is σ = 28420426424. Its totient is φ = 13117119876.

The previous prime is 19675679809. The next prime is 19675679831. The reversal of 19675679823 is 32897657691.

19675679823 is a `hidden beast` number, since 1 + 9 + 67 + 567 + 9 + 8 + 2 + 3 = 666.

It is not a de Polignac number, because 19675679823 - 2²⁰ = 19674631247 is a prime.

It is a super-2 number, since 2×19675679823² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19675675823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1093093315 + ... + 1093093332.

Almost surely, 2^19675679823 is an apocalyptic number.

19675679823 is a deficient number, since it is larger than the sum of its proper divisors (8744746601).

19675679823 is a wasteful number, since it uses less digits than its factorization.

19675679823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186186653 (or 2186186650 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 63.

The spelling of 19675679823 in words is "nineteen billion, six hundred seventy-five million, six hundred seventy-nine thousand, eight hundred twenty-three".