66053268405 has 48 divisors (see below), whose sum is σ = 119619452160. Its totient is φ = 33654660864.

The previous prime is 66053268401. The next prime is 66053268431. The reversal of 66053268405 is 50486235066.

66053268405 is a `hidden beast` number, since 6 + 605 + 32 + 6 + 8 + 4 + 0 + 5 = 666.

It is not a de Polignac number, because 66053268405 - 2² = 66053268401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66053268401) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 797872 + ... + 876758.

It is an arithmetic number, because the mean of its divisors is an integer number (2492071920).

Almost surely, 2^66053268405 is an apocalyptic number.

It is an amenable number.

66053268405 is a deficient number, since it is larger than the sum of its proper divisors (53566183755).

66053268405 is a wasteful number, since it uses less digits than its factorization.

66053268405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79730 (or 79727 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 66053268405 in words is "sixty-six billion, fifty-three million, two hundred sixty-eight thousand, four hundred five".