518387153197 has 2 divisors, whose sum is σ = 518387153198. Its totient is φ = 518387153196.

The previous prime is 518387153177. The next prime is 518387153257. The reversal of 518387153197 is 791351783815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300735979236 + 217651173961 = 548394^2 + 466531^2 .

It is a cyclic number.

It is not a de Polignac number, because 518387153197 - 2¹⁵ = 518387120429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (518387153107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259193576598 + 259193576599.

It is an arithmetic number, because the mean of its divisors is an integer number (259193576599).

Almost surely, 2^518387153197 is an apocalyptic number.

It is an amenable number.

518387153197 is a deficient number, since it is larger than the sum of its proper divisors (1).

518387153197 is an equidigital number, since it uses as much as digits as its factorization.

518387153197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 58.

The spelling of 518387153197 in words is "five hundred eighteen billion, three hundred eighty-seven million, one hundred fifty-three thousand, one hundred ninety-seven".