16660255366544 has 20 divisors (see below), whose sum is σ = 32331392198640. Its totient is φ = 8316670283040.

The previous prime is 16660255366453. The next prime is 16660255366591. The reversal of 16660255366544 is 44566355206661.

It is a happy number.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841077302 + ... + 841097109.

It is an arithmetic number, because the mean of its divisors is an integer number (1616569609932).

Almost surely, 2^{16660255366544} is an apocalyptic number.

It is an amenable number.

16660255366544 is a deficient number, since it is larger than the sum of its proper divisors (15671136832096).

16660255366544 is a wasteful number, since it uses less digits than its factorization.

16660255366544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1682175038 (or 1682175032 counting only the distinct ones).

The product of its (nonzero) digits is 93312000, while the sum is 59.

The spelling of 16660255366544 in words is "sixteen trillion, six hundred sixty billion, two hundred fifty-five million, three hundred sixty-six thousand, five hundred forty-four".