17972250453 has 12 divisors (see below), whose sum is σ = 25977465228. Its totient is φ = 11973401280.

The previous prime is 17972250449. The next prime is 17972250479. The reversal of 17972250453 is 35405227971.

It is a happy number.

17972250453 is a `hidden beast` number, since 1 + 7 + 97 + 2 + 2 + 504 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13219940484 + 4752309969 = 114978^2 + 68937^2 .

It is not a de Polignac number, because 17972250453 - 2² = 17972250449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 17972250399 and 17972250408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17972250433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 660850 + ... + 687507.

It is an arithmetic number, because the mean of its divisors is an integer number (2164788769).

Almost surely, 2^17972250453 is an apocalyptic number.

It is an amenable number.

17972250453 is a deficient number, since it is larger than the sum of its proper divisors (8005214775).

17972250453 is a wasteful number, since it uses less digits than its factorization.

17972250453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349844 (or 1349841 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 17972250453 in words is "seventeen billion, nine hundred seventy-two million, two hundred fifty thousand, four hundred fifty-three".