65516111601 has 8 divisors (see below), whose sum is σ = 87359709120. Its totient is φ = 43674960912.

The previous prime is 65516111579. The next prime is 65516111693. The reversal of 65516111601 is 10611161556.

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

It is not a de Polignac number, because 65516111601 - 2⁷ = 65516111473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65516111701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 548290 + ... + 657003.

It is an arithmetic number, because the mean of its divisors is an integer number (10919963640).

Almost surely, 2^65516111601 is an apocalyptic number.

It is an amenable number.

65516111601 is a deficient number, since it is larger than the sum of its proper divisors (21843597519).

65516111601 is a wasteful number, since it uses less digits than its factorization.

65516111601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223415.

The product of its (nonzero) digits is 5400, while the sum is 33.

The spelling of 65516111601 in words is "sixty-five billion, five hundred sixteen million, one hundred eleven thousand, six hundred one".