65136411771 has 4 divisors (see below), whose sum is σ = 86848549032. Its totient is φ = 43424274512.

The previous prime is 65136411721. The next prime is 65136411779. The reversal of 65136411771 is 17711463156.

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 65136411771 - 2¹⁰ = 65136410747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65136411779) 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, 10856068626 + ... + 10856068631.

It is an arithmetic number, because the mean of its divisors is an integer number (21712137258).

Almost surely, 2^65136411771 is an apocalyptic number.

65136411771 is a deficient number, since it is larger than the sum of its proper divisors (21712137261).

65136411771 is a wasteful number, since it uses less digits than its factorization.

65136411771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21712137260.

The product of its digits is 105840, while the sum is 42.

The spelling of 65136411771 in words is "sixty-five billion, one hundred thirty-six million, four hundred eleven thousand, seven hundred seventy-one".