12135054554 has 8 divisors (see below), whose sum is σ = 20802950688. Its totient is φ = 5200737660.

The previous prime is 12135054521. The next prime is 12135054599. The reversal of 12135054554 is 45545053121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12135054554² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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, 433394792 + ... + 433394819.

It is an arithmetic number, because the mean of its divisors is an integer number (2600368836).

Almost surely, 2^12135054554 is an apocalyptic number.

12135054554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12135054554 is a deficient number, since it is larger than the sum of its proper divisors (8667896134).

12135054554 is an equidigital number, since it uses as much as digits as its factorization.

12135054554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866789620.

The product of its (nonzero) digits is 60000, while the sum is 35.

The spelling of 12135054554 in words is "twelve billion, one hundred thirty-five million, fifty-four thousand, five hundred fifty-four".