199927085026 has 4 divisors (see below), whose sum is σ = 299890627542. Its totient is φ = 99963542512.

The previous prime is 199927084997. The next prime is 199927085041. The reversal of 199927085026 is 620580729991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 620580729991 = 17 ⋅36504748823.

It can be written as a sum of positive squares in only one way, i.e., 138569318001 + 61357767025 = 372249^2 + 247705^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49981771255 + ... + 49981771258.

Almost surely, 2^199927085026 is an apocalyptic number.

199927085026 is a deficient number, since it is larger than the sum of its proper divisors (99963542516).

199927085026 is an equidigital number, since it uses as much as digits as its factorization.

199927085026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99963542515.

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 199927085026 in words is "one hundred ninety-nine billion, nine hundred twenty-seven million, eighty-five thousand, twenty-six".