19110020011013 has 4 divisors (see below), whose sum is σ = 19110148276908. Its totient is φ = 19109891745120.

The previous prime is 19110020011007. The next prime is 19110020011031. The reversal of 19110020011013 is 31011002001191.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6500546846689 + 12609473164324 = 2549617^2 + 3550982^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19110020011013 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 (19110020011513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63909206 + ... + 64207527.

It is an arithmetic number, because the mean of its divisors is an integer number (4777537069227).

Almost surely, 2^{19110020011013} is an apocalyptic number.

It is an amenable number.

19110020011013 is a deficient number, since it is larger than the sum of its proper divisors (128265895).

19110020011013 is a wasteful number, since it uses less digits than its factorization.

19110020011013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128265894.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 19110020011013 in words is "nineteen trillion, one hundred ten billion, twenty million, eleven thousand, thirteen".