65366916131 has 4 divisors (see below), whose sum is σ = 71309363064. Its totient is φ = 59424469200.

The previous prime is 65366916127. The next prime is 65366916137. The reversal of 65366916131 is 13161966356.

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 65366916131 - 2² = 65366916127 is a prime.

It is a super-2 number, since 2×65366916131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65366916137) 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, 2971223450 + ... + 2971223471.

It is an arithmetic number, because the mean of its divisors is an integer number (17827340766).

Almost surely, 2^65366916131 is an apocalyptic number.

65366916131 is a deficient number, since it is larger than the sum of its proper divisors (5942446933).

65366916131 is a wasteful number, since it uses less digits than its factorization.

65366916131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5942446932.

The product of its digits is 524880, while the sum is 47.

The spelling of 65366916131 in words is "sixty-five billion, three hundred sixty-six million, nine hundred sixteen thousand, one hundred thirty-one".