66026518511 has 2 divisors, whose sum is σ = 66026518512. Its totient is φ = 66026518510.

The previous prime is 66026518489. The next prime is 66026518627. The reversal of 66026518511 is 11581562066.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66026518511 is a prime.

It is a super-2 number, since 2×66026518511² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66026512511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33013259255 + 33013259256.

It is an arithmetic number, because the mean of its divisors is an integer number (33013259256).

Almost surely, 2^66026518511 is an apocalyptic number.

66026518511 is a deficient number, since it is larger than the sum of its proper divisors (1).

66026518511 is an equidigital number, since it uses as much as digits as its factorization.

66026518511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 41.

The spelling of 66026518511 in words is "sixty-six billion, twenty-six million, five hundred eighteen thousand, five hundred eleven".