57516112121197 has 2 divisors, whose sum is σ = 57516112121198. Its totient is φ = 57516112121196.

The previous prime is 57516112121179. The next prime is 57516112121219. The reversal of 57516112121197 is 79112121161575.

Together with previous prime (57516112121179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48586838621476 + 8929273499721 = 6970426^2 + 2988189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57516112121197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57516112121197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57516113121197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28758056060598 + 28758056060599.

It is an arithmetic number, because the mean of its divisors is an integer number (28758056060599).

Almost surely, 2^{57516112121197} is an apocalyptic number.

It is an amenable number.

57516112121197 is a deficient number, since it is larger than the sum of its proper divisors (1).

57516112121197 is an equidigital number, since it uses as much as digits as its factorization.

57516112121197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 264600, while the sum is 49.

The spelling of 57516112121197 in words is "fifty-seven trillion, five hundred sixteen billion, one hundred twelve million, one hundred twenty-one thousand, one hundred ninety-seven".