66740074759 has 2 divisors, whose sum is σ = 66740074760. Its totient is φ = 66740074758.

The previous prime is 66740074691. The next prime is 66740074769. The reversal of 66740074759 is 95747004766.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66740074759 - 2¹⁷ = 66739943687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66740074769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33370037379 + 33370037380.

It is an arithmetic number, because the mean of its divisors is an integer number (33370037380).

Almost surely, 2^66740074759 is an apocalyptic number.

66740074759 is a deficient number, since it is larger than the sum of its proper divisors (1).

66740074759 is an equidigital number, since it uses as much as digits as its factorization.

66740074759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8890560, while the sum is 55.

It can be divided in two parts, 6674007 and 4759, that added together give a palindrome (6678766).

The spelling of 66740074759 in words is "sixty-six billion, seven hundred forty million, seventy-four thousand, seven hundred fifty-nine".