65776636423 has 4 divisors (see below), whose sum is σ = 65777566648. Its totient is φ = 65775706200.

The previous prime is 65776636399. The next prime is 65776636439. The reversal of 65776636423 is 32463667756.

65776636423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65776636423 - 2¹³ = 65776628231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65776631423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349461 + ... + 503662.

It is an arithmetic number, because the mean of its divisors is an integer number (16444391662).

Almost surely, 2^65776636423 is an apocalyptic number.

65776636423 is a deficient number, since it is larger than the sum of its proper divisors (930225).

65776636423 is an equidigital number, since it uses as much as digits as its factorization.

65776636423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930224.

The product of its digits is 22861440, while the sum is 55.

The spelling of 65776636423 in words is "sixty-five billion, seven hundred seventy-six million, six hundred thirty-six thousand, four hundred twenty-three".