199434199501 has 4 divisors (see below), whose sum is σ = 199509545632. Its totient is φ = 199358853372.

The previous prime is 199434199403. The next prime is 199434199507. The reversal of 199434199501 is 105991434991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 199434199501 - 2⁹ = 199434198989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199434199507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37669095 + ... + 37674388.

It is an arithmetic number, because the mean of its divisors is an integer number (49877386408).

Almost surely, 2^199434199501 is an apocalyptic number.

It is an amenable number.

199434199501 is a deficient number, since it is larger than the sum of its proper divisors (75346131).

199434199501 is an equidigital number, since it uses as much as digits as its factorization.

199434199501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75346130.

The product of its (nonzero) digits is 1574640, while the sum is 55.

The spelling of 199434199501 in words is "one hundred ninety-nine billion, four hundred thirty-four million, one hundred ninety-nine thousand, five hundred one".