19136520304069 has 4 divisors (see below), whose sum is σ = 21870308918944. Its totient is φ = 16402731689196.

The previous prime is 19136520304067. The next prime is 19136520304079. The reversal of 19136520304069 is 96040302563191.

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 19136520304069 - 2¹ = 19136520304067 is a prime.

It is a super-4 number, since 4×19136520304069⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19136520304067) 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, 1366894307427 + ... + 1366894307440.

It is an arithmetic number, because the mean of its divisors is an integer number (5467577229736).

Almost surely, 2^{19136520304069} is an apocalyptic number.

It is an amenable number.

19136520304069 is a deficient number, since it is larger than the sum of its proper divisors (2733788614875).

19136520304069 is an equidigital number, since it uses as much as digits as its factorization.

19136520304069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733788614874.

The product of its (nonzero) digits is 1049760, while the sum is 49.

The spelling of 19136520304069 in words is "nineteen trillion, one hundred thirty-six billion, five hundred twenty million, three hundred four thousand, sixty-nine".