65542273665 has 64 divisors (see below), whose sum is σ = 116928479232. Its totient is φ = 31083091200.

The previous prime is 65542273613. The next prime is 65542273721. The reversal of 65542273665 is 56637224556.

It is not a de Polignac number, because 65542273665 - 2²⁰ = 65541225089 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 1465779 + ... + 1509831.

It is an arithmetic number, because the mean of its divisors is an integer number (1827007488).

Almost surely, 2^65542273665 is an apocalyptic number.

It is an amenable number.

65542273665 is a deficient number, since it is larger than the sum of its proper divisors (51386205567).

65542273665 is a wasteful number, since it uses less digits than its factorization.

65542273665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44270.

The product of its digits is 9072000, while the sum is 51.

The spelling of 65542273665 in words is "sixty-five billion, five hundred forty-two million, two hundred seventy-three thousand, six hundred sixty-five".