197386725511 has 2 divisors, whose sum is σ = 197386725512. Its totient is φ = 197386725510.

The previous prime is 197386725493. The next prime is 197386725521. The reversal of 197386725511 is 115527683791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197386725511 - 2⁵ = 197386725479 is a prime.

It is a super-2 number, since 2×197386725511² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197386725521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98693362755 + 98693362756.

It is an arithmetic number, because the mean of its divisors is an integer number (98693362756).

Almost surely, 2^197386725511 is an apocalyptic number.

197386725511 is a deficient number, since it is larger than the sum of its proper divisors (1).

197386725511 is an equidigital number, since it uses as much as digits as its factorization.

197386725511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3175200, while the sum is 55.

The spelling of 197386725511 in words is "one hundred ninety-seven billion, three hundred eighty-six million, seven hundred twenty-five thousand, five hundred eleven".