199974168151 has 2 divisors, whose sum is σ = 199974168152. Its totient is φ = 199974168150.

The previous prime is 199974168133. The next prime is 199974168169. The reversal of 199974168151 is 151861479991.

It is a balanced prime because it is at equal distance from previous prime (199974168133) and next prime (199974168169).

It is a cyclic number.

It is not a de Polignac number, because 199974168151 - 2⁹ = 199974167639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199974168151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199974168551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99987084075 + 99987084076.

It is an arithmetic number, because the mean of its divisors is an integer number (99987084076).

Almost surely, 2^199974168151 is an apocalyptic number.

199974168151 is a deficient number, since it is larger than the sum of its proper divisors (1).

199974168151 is an equidigital number, since it uses as much as digits as its factorization.

199974168151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 61.

The spelling of 199974168151 in words is "one hundred ninety-nine billion, nine hundred seventy-four million, one hundred sixty-eight thousand, one hundred fifty-one".