66115150111 has 2 divisors, whose sum is σ = 66115150112. Its totient is φ = 66115150110.

The previous prime is 66115150081. The next prime is 66115150141. The reversal of 66115150111 is 11105151166.

66115150111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (66115150081) and next prime (66115150141).

It is a cyclic number.

It is not a de Polignac number, because 66115150111 - 2¹¹ = 66115148063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66115150111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66115150141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33057575055 + 33057575056.

It is an arithmetic number, because the mean of its divisors is an integer number (33057575056).

Almost surely, 2^66115150111 is an apocalyptic number.

66115150111 is a deficient number, since it is larger than the sum of its proper divisors (1).

66115150111 is an equidigital number, since it uses as much as digits as its factorization.

66115150111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 28.

The spelling of 66115150111 in words is "sixty-six billion, one hundred fifteen million, one hundred fifty thousand, one hundred eleven".