6666021150016 has 28 divisors (see below), whose sum is σ = 13231789332660. Its totient is φ = 3332026987520.

The previous prime is 6666021149993. The next prime is 6666021150023. The reversal of 6666021150016 is 6100511206666.

It can be written as a sum of positive squares in 2 ways, for example, as 3706795492416 + 2959225657600 = 1925304^2 + 1720240^2 .

It is a congruent number.

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, 15149965 + ... + 15583756.

Almost surely, 2^{6666021150016} is an apocalyptic number.

It is an amenable number.

6666021150016 is a deficient number, since it is larger than the sum of its proper divisors (6565768182644).

6666021150016 is a wasteful number, since it uses less digits than its factorization.

6666021150016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30737122 (or 30737112 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 6666021150016 in words is "six trillion, six hundred sixty-six billion, twenty-one million, one hundred fifty thousand, sixteen".