19583978923197 has 128 divisors (see below), whose sum is σ = 33076613283840. Its totient is φ = 11365728192000.

The previous prime is 19583978923193. The next prime is 19583978923199. The reversal of 19583978923197 is 79132987938591.

19583978923197 is a `hidden beast` number, since 1 + 9 + 58 + 397 + 8 + 92 + 3 + 1 + 97 = 666.

It is not a de Polignac number, because 19583978923197 - 2² = 19583978923193 is a prime.

It is a super-3 number, since 3×19583978923197³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19583978923193) 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 127 ways as a sum of consecutive naturals, for example, 406392138 + ... + 406440324.

It is an arithmetic number, because the mean of its divisors is an integer number (258411041280).

Almost surely, 2^{19583978923197} is an apocalyptic number.

It is an amenable number.

19583978923197 is a deficient number, since it is larger than the sum of its proper divisors (13492634360643).

19583978923197 is a wasteful number, since it uses less digits than its factorization.

19583978923197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49192 (or 49186 counting only the distinct ones).

The product of its digits is 1851776640, while the sum is 81.

The spelling of 19583978923197 in words is "nineteen trillion, five hundred eighty-three billion, nine hundred seventy-eight million, nine hundred twenty-three thousand, one hundred ninety-seven".