5601115556661 has 4 divisors (see below), whose sum is σ = 7468154075552. Its totient is φ = 3734077037772.

The previous prime is 5601115556587. The next prime is 5601115556689. The reversal of 5601115556661 is 1666555111065.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 5601115556661 - 2¹⁷ = 5601115425589 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 5601115556661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5601115556161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933519259441 + ... + 933519259446.

It is an arithmetic number, because the mean of its divisors is an integer number (1867038518888).

Almost surely, 2^{5601115556661} is an apocalyptic number.

It is an amenable number.

5601115556661 is a deficient number, since it is larger than the sum of its proper divisors (1867038518891).

5601115556661 is a wasteful number, since it uses less digits than its factorization.

5601115556661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867038518890.

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 5601115556661 in words is "five trillion, six hundred one billion, one hundred fifteen million, five hundred fifty-six thousand, six hundred sixty-one".