56135519197 has 2 divisors, whose sum is σ = 56135519198. Its totient is φ = 56135519196.

The previous prime is 56135519191. The next prime is 56135519201. The reversal of 56135519197 is 79191553165.

56135519197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30455136196 + 25680383001 = 174514^2 + 160251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56135519197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56135519191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28067759598 + 28067759599.

It is an arithmetic number, because the mean of its divisors is an integer number (28067759599).

Almost surely, 2^56135519197 is an apocalyptic number.

It is an amenable number.

56135519197 is a deficient number, since it is larger than the sum of its proper divisors (1).

56135519197 is an equidigital number, since it uses as much as digits as its factorization.

56135519197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1275750, while the sum is 52.

The spelling of 56135519197 in words is "fifty-six billion, one hundred thirty-five million, five hundred nineteen thousand, one hundred ninety-seven".