11572916897 has 2 divisors, whose sum is σ = 11572916898. Its totient is φ = 11572916896.

The previous prime is 11572916857. The next prime is 11572916921. The reversal of 11572916897 is 79861927511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10159833616 + 1413083281 = 100796^2 + 37591^2 .

It is a cyclic number.

It is not a de Polignac number, because 11572916897 - 2¹⁰ = 11572915873 is a prime.

It is not a weakly prime, because it can be changed into another prime (11572916857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5786458448 + 5786458449.

It is an arithmetic number, because the mean of its divisors is an integer number (5786458449).

Almost surely, 2^11572916897 is an apocalyptic number.

It is an amenable number.

11572916897 is a deficient number, since it is larger than the sum of its proper divisors (1).

11572916897 is an equidigital number, since it uses as much as digits as its factorization.

11572916897 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 56.

The spelling of 11572916897 in words is "eleven billion, five hundred seventy-two million, nine hundred sixteen thousand, eight hundred ninety-seven".