65242824191 has 4 divisors (see below), whose sum is σ = 65248014384. Its totient is φ = 65237634000.

The previous prime is 65242824151. The next prime is 65242824217. The reversal of 65242824191 is 19142824256.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65242824191 is a prime.

It is a super-2 number, since 2×65242824191² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65242824151) 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, 2576195 + ... + 2601396.

It is an arithmetic number, because the mean of its divisors is an integer number (16312003596).

Almost surely, 2^65242824191 is an apocalyptic number.

65242824191 is a deficient number, since it is larger than the sum of its proper divisors (5190193).

65242824191 is a wasteful number, since it uses less digits than its factorization.

65242824191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5190192.

The product of its digits is 276480, while the sum is 44.

The spelling of 65242824191 in words is "sixty-five billion, two hundred forty-two million, eight hundred twenty-four thousand, one hundred ninety-one".