66308731411 has 16 divisors (see below), whose sum is σ = 71565056640. Its totient is φ = 61074800640.

The previous prime is 66308731409. The next prime is 66308731439. The reversal of 66308731411 is 11413780366.

It is a cyclic number.

It is not a de Polignac number, because 66308731411 - 2¹ = 66308731409 is a prime.

It is a super-2 number, since 2×66308731411² (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 (66308731211) 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 15 ways as a sum of consecutive naturals, for example, 15523206 + ... + 15527476.

It is an arithmetic number, because the mean of its divisors is an integer number (4472816040).

Almost surely, 2^66308731411 is an apocalyptic number.

66308731411 is a deficient number, since it is larger than the sum of its proper divisors (5256325229).

66308731411 is a wasteful number, since it uses less digits than its factorization.

66308731411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6606.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 66308731411 in words is "sixty-six billion, three hundred eight million, seven hundred thirty-one thousand, four hundred eleven".