12308907555 has 48 divisors (see below), whose sum is σ = 25455169440. Its totient is φ = 5626926144.

The previous prime is 12308907529. The next prime is 12308907557. The reversal of 12308907555 is 55570980321.

12308907555 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 8 + 90 + 7 + 555 = 666.

12308907555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12308907555 - 2⁶ = 12308907491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12308907555.

It is not an unprimeable number, because it can be changed into a prime (12308907557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 923764 + ... + 936993.

It is an arithmetic number, because the mean of its divisors is an integer number (530316030).

Almost surely, 2^12308907555 is an apocalyptic number.

12308907555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12308907555 is an abundant number, since it is smaller than the sum of its proper divisors (13146261885).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12308907555 is a wasteful number, since it uses less digits than its factorization.

12308907555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860785 (or 1860772 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The spelling of 12308907555 in words is "twelve billion, three hundred eight million, nine hundred seven thousand, five hundred fifty-five".