66567445147 has 16 divisors (see below), whose sum is σ = 78775704000. Its totient is φ = 55037606400.

The previous prime is 66567445127. The next prime is 66567445157. The reversal of 66567445147 is 74154476566.

It is not a de Polignac number, because 66567445147 - 2⁷ = 66567445019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66567445127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56647 + ... + 369247.

It is an arithmetic number, because the mean of its divisors is an integer number (4923481500).

Almost surely, 2^66567445147 is an apocalyptic number.

66567445147 is a deficient number, since it is larger than the sum of its proper divisors (12208258853).

66567445147 is a wasteful number, since it uses less digits than its factorization.

66567445147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313686.

The product of its digits is 16934400, while the sum is 55.

The spelling of 66567445147 in words is "sixty-six billion, five hundred sixty-seven million, four hundred forty-five thousand, one hundred forty-seven".