6516060100661 has 16 divisors (see below), whose sum is σ = 6765247319040. Its totient is φ = 6268509287040.

The previous prime is 6516060100601. The next prime is 6516060100663. The reversal of 6516060100661 is 1660010606156.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6516060100661 - 2¹⁸ = 6516059838517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6516060100663) 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, 163343060 + ... + 163382946.

It is an arithmetic number, because the mean of its divisors is an integer number (422827957440).

Almost surely, 2^{6516060100661} is an apocalyptic number.

It is an amenable number.

6516060100661 is a deficient number, since it is larger than the sum of its proper divisors (249187218379).

6516060100661 is a wasteful number, since it uses less digits than its factorization.

6516060100661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60244.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 6516060100661 in words is "six trillion, five hundred sixteen billion, sixty million, one hundred thousand, six hundred sixty-one".