540006644666 has 16 divisors (see below), whose sum is σ = 846482465664. Its totient is φ = 258113020704.

The previous prime is 540006644657. The next prime is 540006644677. The reversal of 540006644666 is 666446600045.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a self number, because there is not a number n which added to its sum of digits gives 540006644666.

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, 66795395 + ... + 66803478.

It is an arithmetic number, because the mean of its divisors is an integer number (52905154104).

Almost surely, 2^540006644666 is an apocalyptic number.

540006644666 is a deficient number, since it is larger than the sum of its proper divisors (306475820998).

540006644666 is a wasteful number, since it uses less digits than its factorization.

540006644666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133598965.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 540006644666 in words is "five hundred forty billion, six million, six hundred forty-four thousand, six hundred sixty-six".