65571641223 has 16 divisors (see below), whose sum is σ = 98453609472. Its totient is φ = 38458440000.

The previous prime is 65571641189. The next prime is 65571641231. The reversal of 65571641223 is 32214617556.

It is not a de Polignac number, because 65571641223 - 2²¹ = 65569544071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65571641263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32047678 + ... + 32049723.

It is an arithmetic number, because the mean of its divisors is an integer number (6153350592).

Almost surely, 2^65571641223 is an apocalyptic number.

65571641223 is a deficient number, since it is larger than the sum of its proper divisors (32881968249).

65571641223 is a wasteful number, since it uses less digits than its factorization.

65571641223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64097446.

The product of its digits is 302400, while the sum is 42.

The spelling of 65571641223 in words is "sixty-five billion, five hundred seventy-one million, six hundred forty-one thousand, two hundred twenty-three".