5503810061661 has 4 divisors (see below), whose sum is σ = 7338413415552. Its totient is φ = 3669206707772.

The previous prime is 5503810061657. The next prime is 5503810061707. The reversal of 5503810061661 is 1661600183055.

5503810061661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 5503810061661 - 2² = 5503810061657 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5503810061861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917301676941 + ... + 917301676946.

It is an arithmetic number, because the mean of its divisors is an integer number (1834603353888).

Almost surely, 2^{5503810061661} is an apocalyptic number.

It is an amenable number.

5503810061661 is a deficient number, since it is larger than the sum of its proper divisors (1834603353891).

5503810061661 is a wasteful number, since it uses less digits than its factorization.

5503810061661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834603353890.

The product of its (nonzero) digits is 129600, while the sum is 42.

The spelling of 5503810061661 in words is "five trillion, five hundred three billion, eight hundred ten million, sixty-one thousand, six hundred sixty-one".