65311751361 has 4 divisors (see below), whose sum is σ = 87082335152. Its totient is φ = 43541167572.

The previous prime is 65311751339. The next prime is 65311751443. The reversal of 65311751361 is 16315711356.

It is a happy number.

65311751361 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 65311751361 - 2⁷ = 65311751233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65311701361) 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, 10885291891 + ... + 10885291896.

It is an arithmetic number, because the mean of its divisors is an integer number (21770583788).

Almost surely, 2^65311751361 is an apocalyptic number.

It is an amenable number.

65311751361 is a deficient number, since it is larger than the sum of its proper divisors (21770583791).

65311751361 is a wasteful number, since it uses less digits than its factorization.

65311751361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21770583790.

The product of its digits is 56700, while the sum is 39.

The spelling of 65311751361 in words is "sixty-five billion, three hundred eleven million, seven hundred fifty-one thousand, three hundred sixty-one".