65366212197 has 16 divisors (see below), whose sum is σ = 102391829568. Its totient is φ = 36568510080.

The previous prime is 65366212147. The next prime is 65366212201. The reversal of 65366212197 is 79121266356.

65366212197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 65366212197 - 2⁶ = 65366212133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65366212127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76183968 + ... + 76184825.

It is an arithmetic number, because the mean of its divisors is an integer number (6399489348).

Almost surely, 2^65366212197 is an apocalyptic number.

It is an amenable number.

65366212197 is a deficient number, since it is larger than the sum of its proper divisors (37025617371).

65366212197 is a wasteful number, since it uses less digits than its factorization.

65366212197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152368820.

The product of its digits is 816480, while the sum is 48.

The spelling of 65366212197 in words is "sixty-five billion, three hundred sixty-six million, two hundred twelve thousand, one hundred ninety-seven".