199201581967 has 2 divisors, whose sum is σ = 199201581968. Its totient is φ = 199201581966.

The previous prime is 199201581961. The next prime is 199201581983. The reversal of 199201581967 is 769185102991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199201581967 - 2¹⁵ = 199201549199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199201581961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99600790983 + 99600790984.

It is an arithmetic number, because the mean of its divisors is an integer number (99600790984).

Almost surely, 2^199201581967 is an apocalyptic number.

199201581967 is a deficient number, since it is larger than the sum of its proper divisors (1).

199201581967 is an equidigital number, since it uses as much as digits as its factorization.

199201581967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 58.

The spelling of 199201581967 in words is "one hundred ninety-nine billion, two hundred one million, five hundred eighty-one thousand, nine hundred sixty-seven".