19430771782953 has 4 divisors (see below), whose sum is σ = 25907695710608. Its totient is φ = 12953847855300.

The previous prime is 19430771782907. The next prime is 19430771782979. The reversal of 19430771782953 is 35928717703491.

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 not a de Polignac number, because 19430771782953 - 2²⁰ = 19430770734377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19430771782993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3238461963823 + ... + 3238461963828.

It is an arithmetic number, because the mean of its divisors is an integer number (6476923927652).

Almost surely, 2^{19430771782953} is an apocalyptic number.

It is an amenable number.

19430771782953 is a deficient number, since it is larger than the sum of its proper divisors (6476923927655).

19430771782953 is an equidigital number, since it uses as much as digits as its factorization.

19430771782953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6476923927654.

The product of its (nonzero) digits is 80015040, while the sum is 66.

The spelling of 19430771782953 in words is "nineteen trillion, four hundred thirty billion, seven hundred seventy-one million, seven hundred eighty-two thousand, nine hundred fifty-three".