66546183828 has 24 divisors (see below), whose sum is σ = 155279424832. Its totient is φ = 22181347584.

The previous prime is 66546183799. The next prime is 66546183829. The reversal of 66546183828 is 82838164566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66546183829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411876 + ... + 550212.

Almost surely, 2^66546183828 is an apocalyptic number.

It is an amenable number.

66546183828 is an abundant number, since it is smaller than the sum of its proper divisors (88733241004).

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

66546183828 is a wasteful number, since it uses less digits than its factorization.

66546183828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178431 (or 178429 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 57.

The spelling of 66546183828 in words is "sixty-six billion, five hundred forty-six million, one hundred eighty-three thousand, eight hundred twenty-eight".