66734405255 has 32 divisors (see below), whose sum is σ = 92890312704. Its totient is φ = 45077872896.

The previous prime is 66734405207. The next prime is 66734405323. The reversal of 66734405255 is 55250443766.

It is not a de Polignac number, because 66734405255 - 2¹² = 66734401159 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2097194 + ... + 2128776.

It is an arithmetic number, because the mean of its divisors is an integer number (2902822272).

Almost surely, 2^66734405255 is an apocalyptic number.

66734405255 is a deficient number, since it is larger than the sum of its proper divisors (26155907449).

66734405255 is a wasteful number, since it uses less digits than its factorization.

66734405255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32495.

The product of its (nonzero) digits is 3024000, while the sum is 47.

The spelling of 66734405255 in words is "sixty-six billion, seven hundred thirty-four million, four hundred five thousand, two hundred fifty-five".