66226671511 has 32 divisors (see below), whose sum is σ = 91088557056. Its totient is φ = 46473696000.

The previous prime is 66226671509. The next prime is 66226671559. The reversal of 66226671511 is 11517662266.

It is a cyclic number.

It is not a de Polignac number, because 66226671511 - 2¹ = 66226671509 is a prime.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66226671811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 765795 + ... + 847876.

It is an arithmetic number, because the mean of its divisors is an integer number (2846517408).

Almost surely, 2^66226671511 is an apocalyptic number.

66226671511 is a deficient number, since it is larger than the sum of its proper divisors (24861885545).

66226671511 is a wasteful number, since it uses less digits than its factorization.

66226671511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613743.

The product of its digits is 181440, while the sum is 43.

It can be divided in two parts, 66226 and 671511, that added together give a palindrome (737737).

The spelling of 66226671511 in words is "sixty-six billion, two hundred twenty-six million, six hundred seventy-one thousand, five hundred eleven".