197992020823 has 2 divisors, whose sum is σ = 197992020824. Its totient is φ = 197992020822.

The previous prime is 197992020797. The next prime is 197992020829. The reversal of 197992020823 is 328020299791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197992020823 - 2⁹ = 197992020311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197992020829) 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 as a sum of consecutive naturals, namely, 98996010411 + 98996010412.

It is an arithmetic number, because the mean of its divisors is an integer number (98996010412).

Almost surely, 2^197992020823 is an apocalyptic number.

197992020823 is a deficient number, since it is larger than the sum of its proper divisors (1).

197992020823 is an equidigital number, since it uses as much as digits as its factorization.

197992020823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 52.

The spelling of 197992020823 in words is "one hundred ninety-seven billion, nine hundred ninety-two million, twenty thousand, eight hundred twenty-three".