192719999999 has 2 divisors, whose sum is σ = 192720000000. Its totient is φ = 192719999998.

The previous prime is 192719999993. The next prime is 192720000023. The reversal of 192719999999 is 999999917291.

It is a weak prime.

It is an emirp because it is prime and its reverse (999999917291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 192719999999 - 2⁸ = 192719999743 is a prime.

It is a super-2 number, since 2×192719999999² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

192719999999 is a modest number, since divided by 999999 gives 192719 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (192719999993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96359999999 + 96360000000.

It is an arithmetic number, because the mean of its divisors is an integer number (96360000000).

Almost surely, 2^192719999999 is an apocalyptic number.

192719999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

192719999999 is an equidigital number, since it uses as much as digits as its factorization.

192719999999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 602654094, while the sum is 83.

The spelling of 192719999999 in words is "one hundred ninety-two billion, seven hundred nineteen million, nine hundred ninety-nine thousand, nine hundred ninety-nine".