11572491197 has 2 divisors, whose sum is σ = 11572491198. Its totient is φ = 11572491196.

The previous prime is 11572491131. The next prime is 11572491241. The reversal of 11572491197 is 79119427511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11120546116 + 451945081 = 105454^2 + 21259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11572491197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11572491127) 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 as a sum of consecutive naturals, namely, 5786245598 + 5786245599.

It is an arithmetic number, because the mean of its divisors is an integer number (5786245599).

Almost surely, 2^11572491197 is an apocalyptic number.

It is an amenable number.

11572491197 is a deficient number, since it is larger than the sum of its proper divisors (1).

11572491197 is an equidigital number, since it uses as much as digits as its factorization.

11572491197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 47.

The spelling of 11572491197 in words is "eleven billion, five hundred seventy-two million, four hundred ninety-one thousand, one hundred ninety-seven".