12055405553 has 4 divisors (see below), whose sum is σ = 12056293620. Its totient is φ = 12054517488.

The previous prime is 12055405543. The next prime is 12055405657. The reversal of 12055405553 is 35550455021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11584862689 + 470542864 = 107633^2 + 21692^2 .

It is a cyclic number.

It is not a de Polignac number, because 12055405553 - 2⁶ = 12055405489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12055405543) 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, 423350 + ... + 450927.

It is an arithmetic number, because the mean of its divisors is an integer number (3014073405).

Almost surely, 2^12055405553 is an apocalyptic number.

It is an amenable number.

12055405553 is a deficient number, since it is larger than the sum of its proper divisors (888067).

12055405553 is an equidigital number, since it uses as much as digits as its factorization.

12055405553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888066.

The product of its (nonzero) digits is 75000, while the sum is 35.

The spelling of 12055405553 in words is "twelve billion, fifty-five million, four hundred five thousand, five hundred fifty-three".