65448672591 has 16 divisors (see below), whose sum is σ = 92713874400. Its totient is φ = 40989287808.

The previous prime is 65448672547. The next prime is 65448672613. The reversal of 65448672591 is 19527684456.

It is not a de Polignac number, because 65448672591 - 2¹⁰ = 65448671567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65448672391) 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 15 ways as a sum of consecutive naturals, for example, 10162776 + ... + 10169213.

It is an arithmetic number, because the mean of its divisors is an integer number (5794617150).

Almost surely, 2^65448672591 is an apocalyptic number.

65448672591 is a deficient number, since it is larger than the sum of its proper divisors (27265201809).

65448672591 is a wasteful number, since it uses less digits than its factorization.

65448672591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20332058.

The product of its digits is 14515200, while the sum is 57.

The spelling of 65448672591 in words is "sixty-five billion, four hundred forty-eight million, six hundred seventy-two thousand, five hundred ninety-one".