19480625709172 has 6 divisors (see below), whose sum is σ = 34091094991058. Its totient is φ = 9740312854584.

The previous prime is 19480625709157. The next prime is 19480625709173. The reversal of 19480625709172 is 27190752608491.

It can be written as a sum of positive squares in only one way, i.e., 19479900268816 + 725440356 = 4413604^2 + 26934^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19480625709172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19480625709173) 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 as a sum of consecutive naturals, namely, 2435078213643 + ... + 2435078213650.

Almost surely, 2^{19480625709172} is an apocalyptic number.

It is an amenable number.

19480625709172 is a deficient number, since it is larger than the sum of its proper divisors (14610469281886).

19480625709172 is a wasteful number, since it uses less digits than its factorization.

19480625709172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4870156427297 (or 4870156427295 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 19480625709172 in words is "nineteen trillion, four hundred eighty billion, six hundred twenty-five million, seven hundred nine thousand, one hundred seventy-two".