66253976055 has 64 divisors (see below), whose sum is σ = 122263603200. Its totient is φ = 34016492160.

The previous prime is 66253976039. The next prime is 66253976069. The reversal of 66253976055 is 55067935266.

It is a happy number.

66253976055 is a `hidden beast` number, since 6 + 6 + 25 + 3 + 9 + 7 + 605 + 5 = 666.

It is not a de Polignac number, because 66253976055 - 2⁴ = 66253976039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66253975992 and 66253976010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 301456 + ... + 472634.

It is an arithmetic number, because the mean of its divisors is an integer number (1910368800).

Almost surely, 2^66253976055 is an apocalyptic number.

66253976055 is a deficient number, since it is larger than the sum of its proper divisors (56009627145).

66253976055 is a wasteful number, since it uses less digits than its factorization.

66253976055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171301 (or 171295 counting only the distinct ones).

The product of its (nonzero) digits is 10206000, while the sum is 54.

The spelling of 66253976055 in words is "sixty-six billion, two hundred fifty-three million, nine hundred seventy-six thousand, fifty-five".