66653908753911 has 16 divisors (see below), whose sum is σ = 88890457530624. Its totient is φ = 44426650492224.

The previous prime is 66653908753907. The next prime is 66653908753931. The reversal of 66653908753911 is 11935780935666.

It is not a de Polignac number, because 66653908753911 - 2² = 66653908753907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66653908753931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320466196 + ... + 320674118.

It is an arithmetic number, because the mean of its divisors is an integer number (5555653595664).

Almost surely, 2^{66653908753911} is an apocalyptic number.

66653908753911 is a deficient number, since it is larger than the sum of its proper divisors (22236548776713).

66653908753911 is a wasteful number, since it uses less digits than its factorization.

66653908753911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229750.

The product of its (nonzero) digits is 220449600, while the sum is 69.

The spelling of 66653908753911 in words is "sixty-six trillion, six hundred fifty-three billion, nine hundred eight million, seven hundred fifty-three thousand, nine hundred eleven".