19166313320453 has 4 divisors (see below), whose sum is σ = 20640645114348. Its totient is φ = 17691981526560.

The previous prime is 19166313320387. The next prime is 19166313320471. The reversal of 19166313320453 is 35402331366191.

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 859193663329 + 18307119657124 = 926927^2 + 4278682^2 .

It is a cyclic number.

It is not a de Polignac number, because 19166313320453 - 2¹⁶ = 19166313254917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19166313320398 and 19166313320407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19166313820453) 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, 737165896928 + ... + 737165896953.

It is an arithmetic number, because the mean of its divisors is an integer number (5160161278587).

Almost surely, 2^{19166313320453} is an apocalyptic number.

19166313320453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19166313320453 is a deficient number, since it is larger than the sum of its proper divisors (1474331793895).

19166313320453 is a wasteful number, since it uses less digits than its factorization.

19166313320453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474331793894.

The product of its (nonzero) digits is 1049760, while the sum is 47.

The spelling of 19166313320453 in words is "nineteen trillion, one hundred sixty-six billion, three hundred thirteen million, three hundred twenty thousand, four hundred fifty-three".