66116006115611 has 8 divisors (see below), whose sum is σ = 67347877653504. Its totient is φ = 64892486249640.

The previous prime is 66116006115587. The next prime is 66116006115617. The reversal of 66116006115611 is 11651160061166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66116006115611 is a prime.

It is a super-2 number, since 2×66116006115611² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66116006115617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2087902001 + ... + 2087933666.

It is an arithmetic number, because the mean of its divisors is an integer number (8418484706688).

Almost surely, 2^{66116006115611} is an apocalyptic number.

66116006115611 is a deficient number, since it is larger than the sum of its proper divisors (1231871537893).

66116006115611 is a wasteful number, since it uses less digits than its factorization.

66116006115611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175835961.

The product of its (nonzero) digits is 38880, while the sum is 41.

Adding to 66116006115611 its reverse (11651160061166), we get a palindrome (77767166176777).

The spelling of 66116006115611 in words is "sixty-six trillion, one hundred sixteen billion, six million, one hundred fifteen thousand, six hundred eleven".