5661660111008 has 48 divisors (see below), whose sum is σ = 12160826758080. Its totient is φ = 2573243788800.

The previous prime is 5661660111007. The next prime is 5661660111011. The reversal of 5661660111008 is 8001110661665.

It is not an unprimeable number, because it can be changed into a prime (5661660111007) 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, 3094373 + ... + 4571483.

It is an arithmetic number, because the mean of its divisors is an integer number (253350557460).

Almost surely, 2^{5661660111008} is an apocalyptic number.

It is an amenable number.

5661660111008 is an abundant number, since it is smaller than the sum of its proper divisors (6499166647072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5661660111008 is a wasteful number, since it uses less digits than its factorization.

5661660111008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488021 (or 1488013 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 41.

The spelling of 5661660111008 in words is "five trillion, six hundred sixty-one billion, six hundred sixty million, one hundred eleven thousand, eight".