19325134561 has 4 divisors (see below), whose sum is σ = 19327672000. Its totient is φ = 19322597124.

The previous prime is 19325134513. The next prime is 19325134613. The reversal of 19325134561 is 16543152391.

It is a happy number.

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 19325134561 - 2¹⁵ = 19325101793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19325134511) 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, 1257261 + ... + 1272538.

It is an arithmetic number, because the mean of its divisors is an integer number (4831918000).

Almost surely, 2^19325134561 is an apocalyptic number.

It is an amenable number.

19325134561 is a deficient number, since it is larger than the sum of its proper divisors (2537439).

19325134561 is an equidigital number, since it uses as much as digits as its factorization.

19325134561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537438.

The product of its digits is 97200, while the sum is 40.

The spelling of 19325134561 in words is "nineteen billion, three hundred twenty-five million, one hundred thirty-four thousand, five hundred sixty-one".