64586868497 has 2 divisors, whose sum is σ = 64586868498. Its totient is φ = 64586868496.

The previous prime is 64586868461. The next prime is 64586868551. The reversal of 64586868497 is 79486868546.

It is a happy number.

64586868497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58639528336 + 5947340161 = 242156^2 + 77119^2 .

It is a cyclic number.

It is not a de Polignac number, because 64586868497 - 2²² = 64582674193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64586868497.

It is not a weakly prime, because it can be changed into another prime (64586868407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32293434248 + 32293434249.

It is an arithmetic number, because the mean of its divisors is an integer number (32293434249).

Almost surely, 2^64586868497 is an apocalyptic number.

It is an amenable number.

64586868497 is a deficient number, since it is larger than the sum of its proper divisors (1).

64586868497 is an equidigital number, since it uses as much as digits as its factorization.

64586868497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 557383680, while the sum is 71.

The spelling of 64586868497 in words is "sixty-four billion, five hundred eighty-six million, eight hundred sixty-eight thousand, four hundred ninety-seven".