71726666011 has 32 divisors (see below), whose sum is σ = 97204520448. Its totient is φ = 51109367040.

The previous prime is 71726666009. The next prime is 71726666057. The reversal of 71726666011 is 11066662717.

It is a cyclic number.

It is not a de Polignac number, because 71726666011 - 2¹ = 71726666009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71726666411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227730 + ... + 441943.

It is an arithmetic number, because the mean of its divisors is an integer number (3037641264).

Almost surely, 2^71726666011 is an apocalyptic number.

71726666011 is a deficient number, since it is larger than the sum of its proper divisors (25477854437).

71726666011 is a wasteful number, since it uses less digits than its factorization.

71726666011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669811.

The product of its (nonzero) digits is 127008, while the sum is 43.

It can be divided in two parts, 71726 and 666011, that added together give a palindrome (737737).

The spelling of 71726666011 in words is "seventy-one billion, seven hundred twenty-six million, six hundred sixty-six thousand, eleven".