66527072511 has 16 divisors (see below), whose sum is σ = 93599654400. Its totient is φ = 41914352448.

The previous prime is 66527072509. The next prime is 66527072551. The reversal of 66527072511 is 11527072566.

It is a happy number.

It is not a de Polignac number, because 66527072511 - 2¹ = 66527072509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66527072551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1403511 + ... + 1450136.

It is an arithmetic number, because the mean of its divisors is an integer number (5849978400).

Almost surely, 2^66527072511 is an apocalyptic number.

66527072511 is a deficient number, since it is larger than the sum of its proper divisors (27072581889).

66527072511 is a wasteful number, since it uses less digits than its factorization.

66527072511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854078.

The product of its (nonzero) digits is 176400, while the sum is 42.

Subtracting from 66527072511 its reverse (11527072566), we obtain a palindrome (54999999945).

The spelling of 66527072511 in words is "sixty-six billion, five hundred twenty-seven million, seventy-two thousand, five hundred eleven".