66541136506600 has 48 divisors (see below), whose sum is σ = 176809305578400. Its totient is φ = 22814103944640.

The previous prime is 66541136506589. The next prime is 66541136506631. The reversal of 66541136506600 is 660563114566.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23764690210 + ... + 23764693009.

It is an arithmetic number, because the mean of its divisors is an integer number (3683527199550).

Almost surely, 2^{66541136506600} is an apocalyptic number.

It is an amenable number.

66541136506600 is an abundant number, since it is smaller than the sum of its proper divisors (110268169071800).

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

66541136506600 is a wasteful number, since it uses less digits than its factorization.

66541136506600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47529383242 (or 47529383233 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 49.

The spelling of 66541136506600 in words is "sixty-six trillion, five hundred forty-one billion, one hundred thirty-six million, five hundred six thousand, six hundred".