4013122745666 has 48 divisors (see below), whose sum is σ = 6574925763000. Its totient is φ = 1834658332416.

The previous prime is 4013122745659. The next prime is 4013122745693. The reversal of 4013122745666 is 6665472213104.

It can be written as a sum of positive squares in 4 ways, for example, as 3891446655625 + 121676090041 = 1972675^2 + 348821^2 .

It is a super-2 number, since 2×4013122745666² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4013122745666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53333366 + ... + 53408558.

Almost surely, 2^{4013122745666} is an apocalyptic number.

4013122745666 is a deficient number, since it is larger than the sum of its proper divisors (2561803017334).

4013122745666 is a wasteful number, since it uses less digits than its factorization.

4013122745666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77811 (or 77792 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 4013122745666 in words is "four trillion, thirteen billion, one hundred twenty-two million, seven hundred forty-five thousand, six hundred sixty-six".