66617314011 has 24 divisors (see below), whose sum is σ = 103871083680. Its totient is φ = 41015753856.

The previous prime is 66617313979. The next prime is 66617314021. The reversal of 66617314011 is 11041371666.

It is not a de Polignac number, because 66617314011 - 2⁵ = 66617313979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66617314021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5542666 + ... + 5554671.

It is an arithmetic number, because the mean of its divisors is an integer number (4327961820).

Almost surely, 2^66617314011 is an apocalyptic number.

66617314011 is a deficient number, since it is larger than the sum of its proper divisors (37253769669).

66617314011 is a wasteful number, since it uses less digits than its factorization.

66617314011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11097395 (or 11097392 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

Adding to 66617314011 its reverse (11041371666), we get a palindrome (77658685677).

It can be divided in two parts, 66617 and 314011, that added together give a triangular number (380628 = T₈₇₂).

The spelling of 66617314011 in words is "sixty-six billion, six hundred seventeen million, three hundred fourteen thousand, eleven".