66526748805 has 128 divisors (see below), whose sum is σ = 128098713600. Its totient is φ = 29105049600.

The previous prime is 66526748777. The next prime is 66526748819. The reversal of 66526748805 is 50884762566.

It is not a de Polignac number, because 66526748805 - 2⁵ = 66526748773 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9474586 + ... + 9481604.

It is an arithmetic number, because the mean of its divisors is an integer number (1000771200).

Almost surely, 2^66526748805 is an apocalyptic number.

It is an amenable number.

66526748805 is a deficient number, since it is larger than the sum of its proper divisors (61571964795).

66526748805 is a wasteful number, since it uses less digits than its factorization.

66526748805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195.

The product of its (nonzero) digits is 19353600, while the sum is 57.

The spelling of 66526748805 in words is "sixty-six billion, five hundred twenty-six million, seven hundred forty-eight thousand, eight hundred five".