199205038442951 has 2 divisors, whose sum is σ = 199205038442952. Its totient is φ = 199205038442950.

The previous prime is 199205038442867. The next prime is 199205038442999. The reversal of 199205038442951 is 159244830502991.

199205038442951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199205038442951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199205038462951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99602519221475 + 99602519221476.

It is an arithmetic number, because the mean of its divisors is an integer number (99602519221476).

Almost surely, 2^{199205038442951} is an apocalyptic number.

199205038442951 is a deficient number, since it is larger than the sum of its proper divisors (1).

199205038442951 is an equidigital number, since it uses as much as digits as its factorization.

199205038442951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27993600, while the sum is 62.

The spelling of 199205038442951 in words is "one hundred ninety-nine trillion, two hundred five billion, thirty-eight million, four hundred forty-two thousand, nine hundred fifty-one".