6005511615661 has 8 divisors (see below), whose sum is σ = 6322022416800. Its totient is φ = 5689043938800.

The previous prime is 6005511615659. The next prime is 6005511615679. The reversal of 6005511615661 is 1665161155006.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6005511615661 - 2¹ = 6005511615659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6005511615641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10495015 + ... + 11052436.

It is an arithmetic number, because the mean of its divisors is an integer number (790252802100).

Almost surely, 2^{6005511615661} is an apocalyptic number.

It is an amenable number.

6005511615661 is a deficient number, since it is larger than the sum of its proper divisors (316510801139).

6005511615661 is a wasteful number, since it uses less digits than its factorization.

6005511615661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21562139.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 6005511615661 in words is "six trillion, five billion, five hundred eleven million, six hundred fifteen thousand, six hundred sixty-one".