65969377686 has 12 divisors (see below), whose sum is σ = 142933651692. Its totient is φ = 21989792556.

The previous prime is 65969377679. The next prime is 65969377687. The reversal of 65969377686 is 68677396956.

65969377686 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65969377686² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65969377687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1832482696 + ... + 1832482731.

It is an arithmetic number, because the mean of its divisors is an integer number (11911137641).

Almost surely, 2^65969377686 is an apocalyptic number.

65969377686 is an abundant number, since it is smaller than the sum of its proper divisors (76964274006).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65969377686 is a wasteful number, since it uses less digits than its factorization.

65969377686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664965435 (or 3664965432 counting only the distinct ones).

The product of its digits is 617258880, while the sum is 72.

The spelling of 65969377686 in words is "sixty-five billion, nine hundred sixty-nine million, three hundred seventy-seven thousand, six hundred eighty-six".