1055561000623 has 2 divisors, whose sum is σ = 1055561000624. Its totient is φ = 1055561000622.

The previous prime is 1055561000591. The next prime is 1055561000671. The reversal of 1055561000623 is 3260001655501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1055561000623 - 2⁵ = 1055561000591 is a prime.

It is a super-2 number, since 2×1055561000623² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1055561000323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 527780500311 + 527780500312.

It is an arithmetic number, because the mean of its divisors is an integer number (527780500312).

Almost surely, 2^{1055561000623} is an apocalyptic number.

1055561000623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1055561000623 is an equidigital number, since it uses as much as digits as its factorization.

1055561000623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 1055561000623 in words is "one trillion, fifty-five billion, five hundred sixty-one million, six hundred twenty-three", and thus it is an aban number.