19312011958211 has 4 divisors (see below), whose sum is σ = 22070870809392. Its totient is φ = 16553153107032.

The previous prime is 19312011958207. The next prime is 19312011958229. The reversal of 19312011958211 is 11285911021391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19312011958211 - 2² = 19312011958207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19312011948211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1379429425580 + ... + 1379429425593.

It is an arithmetic number, because the mean of its divisors is an integer number (5517717702348).

Almost surely, 2^{19312011958211} is an apocalyptic number.

19312011958211 is a deficient number, since it is larger than the sum of its proper divisors (2758858851181).

19312011958211 is an equidigital number, since it uses as much as digits as its factorization.

19312011958211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758858851180.

The product of its (nonzero) digits is 38880, while the sum is 44.

The spelling of 19312011958211 in words is "nineteen trillion, three hundred twelve billion, eleven million, nine hundred fifty-eight thousand, two hundred eleven".