6550002060661 has 16 divisors (see below), whose sum is σ = 6826717537920. Its totient is φ = 6278958766080.

The previous prime is 6550002060607. The next prime is 6550002060683. The reversal of 6550002060661 is 1660602000556.

It is a cyclic number.

It is not a de Polignac number, because 6550002060661 - 2³⁹ = 6000246246773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6550002060661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6550002010661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4470616 + ... + 5752078.

It is an arithmetic number, because the mean of its divisors is an integer number (426669846120).

Almost surely, 2^{6550002060661} is an apocalyptic number.

It is an amenable number.

6550002060661 is a deficient number, since it is larger than the sum of its proper divisors (276715477259).

6550002060661 is a wasteful number, since it uses less digits than its factorization.

6550002060661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283676.

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 6550002060661 in words is "six trillion, five hundred fifty billion, two million, sixty thousand, six hundred sixty-one".