5561054189923 has 2 divisors, whose sum is σ = 5561054189924. Its totient is φ = 5561054189922.

The previous prime is 5561054189851. The next prime is 5561054189959. The reversal of 5561054189923 is 3299814501655.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5561054189923 - 2²⁵ = 5561020635491 is a prime.

It is not a weakly prime, because it can be changed into another prime (5561054189993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2780527094961 + 2780527094962.

It is an arithmetic number, because the mean of its divisors is an integer number (2780527094962).

Almost surely, 2^{5561054189923} is an apocalyptic number.

5561054189923 is a deficient number, since it is larger than the sum of its proper divisors (1).

5561054189923 is an equidigital number, since it uses as much as digits as its factorization.

5561054189923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664000, while the sum is 58.

The spelling of 5561054189923 in words is "five trillion, five hundred sixty-one billion, fifty-four million, one hundred eighty-nine thousand, nine hundred twenty-three".