65172431647 has 8 divisors (see below), whose sum is σ = 65579240880. Its totient is φ = 64765707840.

The previous prime is 65172431629. The next prime is 65172431669. The reversal of 65172431647 is 74613427156.

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 65172431647 - 2²³ = 65164043039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65172431597 and 65172431606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65172431617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2269197 + ... + 2297737.

It is an arithmetic number, because the mean of its divisors is an integer number (8197405110).

Almost surely, 2^65172431647 is an apocalyptic number.

65172431647 is a deficient number, since it is larger than the sum of its proper divisors (406809233).

65172431647 is a wasteful number, since it uses less digits than its factorization.

65172431647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42713.

The product of its digits is 846720, while the sum is 46.

The spelling of 65172431647 in words is "sixty-five billion, one hundred seventy-two million, four hundred thirty-one thousand, six hundred forty-seven".