7431685386497 has 2 divisors, whose sum is σ = 7431685386498. Its totient is φ = 7431685386496.

The previous prime is 7431685386493. The next prime is 7431685386509. The reversal of 7431685386497 is 7946835861347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7100647407616 + 331037978881 = 2664704^2 + 575359^2 .

It is a cyclic number.

It is not a de Polignac number, because 7431685386497 - 2² = 7431685386493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7431685386497.

It is not a weakly prime, because it can be changed into another prime (7431685386493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3715842693248 + 3715842693249.

It is an arithmetic number, because the mean of its divisors is an integer number (3715842693249).

Almost surely, 2^{7431685386497} is an apocalyptic number.

It is an amenable number.

7431685386497 is a deficient number, since it is larger than the sum of its proper divisors (1).

7431685386497 is an equidigital number, since it uses as much as digits as its factorization.

7431685386497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 731566080, while the sum is 71.

The spelling of 7431685386497 in words is "seven trillion, four hundred thirty-one billion, six hundred eighty-five million, three hundred eighty-six thousand, four hundred ninety-seven".