66474506533524 has 12 divisors (see below), whose sum is σ = 155107181911584. Its totient is φ = 22158168844504.

The previous prime is 66474506533481. The next prime is 66474506533529. The reversal of 66474506533524 is 42533560547466.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66474506533529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2769771105552 + ... + 2769771105575.

It is an arithmetic number, because the mean of its divisors is an integer number (12925598492632).

Almost surely, 2^{66474506533524} is an apocalyptic number.

It is an amenable number.

66474506533524 is an abundant number, since it is smaller than the sum of its proper divisors (88632675378060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66474506533524 is a wasteful number, since it uses less digits than its factorization.

66474506533524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5539542211134 (or 5539542211132 counting only the distinct ones).

The product of its (nonzero) digits is 217728000, while the sum is 60.

The spelling of 66474506533524 in words is "sixty-six trillion, four hundred seventy-four billion, five hundred six million, five hundred thirty-three thousand, five hundred twenty-four".