7572716948449 has 3 divisors (see below), whose sum is σ = 7572719700307. Its totient is φ = 7572714196592.

The previous prime is 7572716948443. The next prime is 7572716948483. The reversal of 7572716948449 is 9448496172757.

It is a happy number.

The square root of 7572716948449 is 2751857.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 6868514016225 + 704202932224 = 2620785^2 + 839168^2 .

It is not a de Polignac number, because 7572716948449 - 2²¹ = 7572714851297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7572716948443) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1375929 + ... + 4127785.

Almost surely, 2^{7572716948449} is an apocalyptic number.

7572716948449 is the 2751857-th square number.

7572716948449 is the 1375929-th centered octagonal number.

It is an amenable number.

7572716948449 is a deficient number, since it is larger than the sum of its proper divisors (2751858).

7572716948449 is an frugal number, since it uses more digits than its factorization.

7572716948449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5503714 (or 2751857 counting only the distinct ones).

The product of its digits is 853493760, while the sum is 73.

The spelling of 7572716948449 in words is "seven trillion, five hundred seventy-two billion, seven hundred sixteen million, nine hundred forty-eight thousand, four hundred forty-nine".