19172037073993 has 4 divisors (see below), whose sum is σ = 19442065765248. Its totient is φ = 18902008382740.

The previous prime is 19172037073991. The next prime is 19172037073997. The reversal of 19172037073993 is 39937073027191.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19172037073993 - 2¹ = 19172037073991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19172037073991) 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, 135014345521 + ... + 135014345662.

It is an arithmetic number, because the mean of its divisors is an integer number (4860516441312).

Almost surely, 2^{19172037073993} is an apocalyptic number.

It is an amenable number.

19172037073993 is a deficient number, since it is larger than the sum of its proper divisors (270028691255).

19172037073993 is an equidigital number, since it uses as much as digits as its factorization.

19172037073993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270028691254.

The product of its (nonzero) digits is 13502538, while the sum is 61.

The spelling of 19172037073993 in words is "nineteen trillion, one hundred seventy-two billion, thirty-seven million, seventy-three thousand, nine hundred ninety-three".