199028074097 has 4 divisors (see below), whose sum is σ = 200960385600. Its totient is φ = 197095762596.

The previous prime is 199028074087. The next prime is 199028074117. The reversal of 199028074097 is 790470820991.

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 199028074097 - 2¹⁶ = 199028008561 is a prime.

It is a super-2 number, since 2×199028074097² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199028074057) 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, 966155597 + ... + 966155802.

It is an arithmetic number, because the mean of its divisors is an integer number (50240096400).

Almost surely, 2^199028074097 is an apocalyptic number.

It is an amenable number.

199028074097 is a deficient number, since it is larger than the sum of its proper divisors (1932311503).

199028074097 is a wasteful number, since it uses less digits than its factorization.

199028074097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932311502.

The product of its (nonzero) digits is 2286144, while the sum is 56.

The spelling of 199028074097 in words is "one hundred ninety-nine billion, twenty-eight million, seventy-four thousand, ninety-seven".