1055505554989 has 4 divisors (see below), whose sum is σ = 1060155359424. Its totient is φ = 1050855750556.

The previous prime is 1055505554981. The next prime is 1055505555011. The reversal of 1055505554989 is 9894555055501.

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 1055505554989 - 2³ = 1055505554981 is a prime.

It is a super-2 number, since 2×1055505554989² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055505554981) 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, 2324901877 + ... + 2324902330.

It is an arithmetic number, because the mean of its divisors is an integer number (265038839856).

Almost surely, 2^{1055505554989} is an apocalyptic number.

It is an amenable number.

1055505554989 is a deficient number, since it is larger than the sum of its proper divisors (4649804435).

1055505554989 is an equidigital number, since it uses as much as digits as its factorization.

1055505554989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649804434.

The product of its (nonzero) digits is 40500000, while the sum is 61.

The spelling of 1055505554989 in words is "one trillion, fifty-five billion, five hundred five million, five hundred fifty-four thousand, nine hundred eighty-nine".