19170038747107 has 4 divisors (see below), whose sum is σ = 19195979260360. Its totient is φ = 19144098233856.

The previous prime is 19170038747077. The next prime is 19170038747131. The reversal of 19170038747107 is 70174783007191.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19170038747107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19170038747137) 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, 12970255518 + ... + 12970256995.

It is an arithmetic number, because the mean of its divisors is an integer number (4798994815090).

Almost surely, 2^{19170038747107} is an apocalyptic number.

19170038747107 is a deficient number, since it is larger than the sum of its proper divisors (25940513253).

19170038747107 is an equidigital number, since it uses as much as digits as its factorization.

19170038747107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25940513252.

The product of its (nonzero) digits is 2074464, while the sum is 55.

The spelling of 19170038747107 in words is "nineteen trillion, one hundred seventy billion, thirty-eight million, seven hundred forty-seven thousand, one hundred seven".