55690045661 has 4 divisors (see below), whose sum is σ = 56633944800. Its totient is φ = 54746146524.

The previous prime is 55690045651. The next prime is 55690045667. The reversal of 55690045661 is 16654009655.

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 55690045661 - 2¹⁰ = 55690044637 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 (55690045667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471949481 + ... + 471949598.

It is an arithmetic number, because the mean of its divisors is an integer number (14158486200).

Almost surely, 2^55690045661 is an apocalyptic number.

It is an amenable number.

55690045661 is a deficient number, since it is larger than the sum of its proper divisors (943899139).

55690045661 is an equidigital number, since it uses as much as digits as its factorization.

55690045661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943899138.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 55690045661 in words is "fifty-five billion, six hundred ninety million, forty-five thousand, six hundred sixty-one".