12547052197 has 2 divisors, whose sum is σ = 12547052198. Its totient is φ = 12547052196.

The previous prime is 12547052143. The next prime is 12547052227. The reversal of 12547052197 is 79125074521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7188665796 + 5358386401 = 84786^2 + 73201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12547052197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12547052597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6273526098 + 6273526099.

It is an arithmetic number, because the mean of its divisors is an integer number (6273526099).

Almost surely, 2^12547052197 is an apocalyptic number.

It is an amenable number.

12547052197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12547052197 is an equidigital number, since it uses as much as digits as its factorization.

12547052197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 12547052197 in words is "twelve billion, five hundred forty-seven million, fifty-two thousand, one hundred ninety-seven".