65155270561 has 8 divisors (see below), whose sum is σ = 65517686784. Its totient is φ = 64793076480.

The previous prime is 65155270559. The next prime is 65155270571. The reversal of 65155270561 is 16507255156.

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

It is a cyclic number.

It is not a de Polignac number, because 65155270561 - 2¹ = 65155270559 is a prime.

It is a super-2 number, since 2×65155270561² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65155270571) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 551041 + ... + 658753.

It is an arithmetic number, because the mean of its divisors is an integer number (8189710848).

Almost surely, 2^65155270561 is an apocalyptic number.

It is an amenable number.

65155270561 is a deficient number, since it is larger than the sum of its proper divisors (362416223).

65155270561 is a wasteful number, since it uses less digits than its factorization.

65155270561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111071.

The product of its (nonzero) digits is 315000, while the sum is 43.

The spelling of 65155270561 in words is "sixty-five billion, one hundred fifty-five million, two hundred seventy thousand, five hundred sixty-one".