199290555971 has 6 divisors (see below), whose sum is σ = 215799832980. Its totient is φ = 183960513048.

The previous prime is 199290555931. The next prime is 199290555983. The reversal of 199290555971 is 179555092991.

It is not a de Polignac number, because 199290555971 - 2⁶ = 199290555907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199290555931) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 589616861 + ... + 589617198.

It is an arithmetic number, because the mean of its divisors is an integer number (35966638830).

Almost surely, 2^199290555971 is an apocalyptic number.

199290555971 is a deficient number, since it is larger than the sum of its proper divisors (16509277009).

199290555971 is a wasteful number, since it uses less digits than its factorization.

199290555971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179234085 (or 1179234072 counting only the distinct ones).

The product of its (nonzero) digits is 11481750, while the sum is 62.

The spelling of 199290555971 in words is "one hundred ninety-nine billion, two hundred ninety million, five hundred fifty-five thousand, nine hundred seventy-one".