66566553113054 has 16 divisors (see below), whose sum is σ = 100093325201280. Its totient is φ = 33202138558680.

The previous prime is 66566553112987. The next prime is 66566553113111. The reversal of 66566553113054 is 45031135566566.

It is a happy number.

It is a super-2 number, since 2×66566553113054² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1891394 + ... + 11692325.

It is an arithmetic number, because the mean of its divisors is an integer number (6255832825080).

Almost surely, 2^{66566553113054} is an apocalyptic number.

66566553113054 is a deficient number, since it is larger than the sum of its proper divisors (33526772088226).

66566553113054 is a wasteful number, since it uses less digits than its factorization.

66566553113054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13589695.

The product of its (nonzero) digits is 29160000, while the sum is 56.

The spelling of 66566553113054 in words is "sixty-six trillion, five hundred sixty-six billion, five hundred fifty-three million, one hundred thirteen thousand, fifty-four".