65511005055 has 16 divisors (see below), whose sum is σ = 105779240160. Its totient is φ = 34618658688.

The previous prime is 65511005051. The next prime is 65511005059. The reversal of 65511005055 is 55050011556.

It is an interprime number because it is at equal distance from previous prime (65511005051) and next prime (65511005059).

It is not a de Polignac number, because 65511005055 - 2² = 65511005051 is a prime.

It is a super-3 number, since 3×65511005055³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65511005051) 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, 20032312 + ... + 20035581.

It is an arithmetic number, because the mean of its divisors is an integer number (6611202510).

Almost surely, 2^65511005055 is an apocalyptic number.

65511005055 is a deficient number, since it is larger than the sum of its proper divisors (40268235105).

65511005055 is a wasteful number, since it uses less digits than its factorization.

65511005055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40068010.

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 65511005055 in words is "sixty-five billion, five hundred eleven million, five thousand, fifty-five".