65541918755 has 8 divisors (see below), whose sum is σ = 78689424624. Its totient is φ = 52407453600.

The previous prime is 65541918751. The next prime is 65541918769. The reversal of 65541918755 is 55781914556.

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

It is not a de Polignac number, because 65541918755 - 2² = 65541918751 is a prime.

It is a super-2 number, since 2×65541918755² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65541918755.

It is not an unprimeable number, because it can be changed into a prime (65541918751) 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, 3249116 + ... + 3269225.

It is an arithmetic number, because the mean of its divisors is an integer number (9836178078).

Almost surely, 2^65541918755 is an apocalyptic number.

65541918755 is a deficient number, since it is larger than the sum of its proper divisors (13147505869).

65541918755 is a wasteful number, since it uses less digits than its factorization.

65541918755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520357.

The product of its digits is 7560000, while the sum is 56.

The spelling of 65541918755 in words is "sixty-five billion, five hundred forty-one million, nine hundred eighteen thousand, seven hundred fifty-five".