65424665431 has 8 divisors (see below), whose sum is σ = 66357512064. Its totient is φ = 64492134840.

The previous prime is 65424665429. The next prime is 65424665443. The reversal of 65424665431 is 13456642456.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65424665431 - 2¹ = 65424665429 is a prime.

It is a super-2 number, since 2×65424665431² (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 (65424665491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354816 + ... + 506698.

It is an arithmetic number, because the mean of its divisors is an integer number (8294689008).

Almost surely, 2^65424665431 is an apocalyptic number.

65424665431 is a deficient number, since it is larger than the sum of its proper divisors (932846633).

65424665431 is a wasteful number, since it uses less digits than its factorization.

65424665431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158021.

The product of its digits is 2073600, while the sum is 46.

The spelling of 65424665431 in words is "sixty-five billion, four hundred twenty-four million, six hundred sixty-five thousand, four hundred thirty-one".