66052053626 has 20 divisors (see below), whose sum is σ = 107334390882. Its totient is φ = 30485536848.

The previous prime is 66052053581. The next prime is 66052053631. The reversal of 66052053626 is 62635025066.

It can be written as a sum of positive squares in 5 ways, for example, as 2606000401 + 63446053225 = 51049^2 + 251885^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 521045 + ... + 635288.

Almost surely, 2^66052053626 is an apocalyptic number.

66052053626 is a deficient number, since it is larger than the sum of its proper divisors (41282337256).

66052053626 is an equidigital number, since it uses as much as digits as its factorization.

66052053626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156387 (or 1156348 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 66052053626 in words is "sixty-six billion, fifty-two million, fifty-three thousand, six hundred twenty-six".