199253519939 has 4 divisors (see below), whose sum is σ = 199260510840. Its totient is φ = 199246529040.

The previous prime is 199253519873. The next prime is 199253519951. The reversal of 199253519939 is 939915352991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939915352991 = 1171 ⋅802660421.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199253519939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199253519989) 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, 3452522 + ... + 3509759.

It is an arithmetic number, because the mean of its divisors is an integer number (49815127710).

Almost surely, 2^199253519939 is an apocalyptic number.

199253519939 is a deficient number, since it is larger than the sum of its proper divisors (6990901).

199253519939 is an equidigital number, since it uses as much as digits as its factorization.

199253519939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990900.

The product of its digits is 26572050, while the sum is 65.

The spelling of 199253519939 in words is "one hundred ninety-nine billion, two hundred fifty-three million, five hundred nineteen thousand, nine hundred thirty-nine".