12045155555 has 8 divisors (see below), whose sum is σ = 14920450944. Its totient is φ = 9325281600.

The previous prime is 12045155543. The next prime is 12045155567. The reversal of 12045155555 is 55555154021.

It is an interprime number because it is at equal distance from previous prime (12045155543) and next prime (12045155567).

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

It is not a de Polignac number, because 12045155555 - 2¹⁰ = 12045154531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38855186 + ... + 38855495.

It is an arithmetic number, because the mean of its divisors is an integer number (1865056368).

Almost surely, 2^12045155555 is an apocalyptic number.

12045155555 is a deficient number, since it is larger than the sum of its proper divisors (2875295389).

12045155555 is an equidigital number, since it uses as much as digits as its factorization.

12045155555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77710717.

The product of its (nonzero) digits is 125000, while the sum is 38.

The spelling of 12045155555 in words is "twelve billion, forty-five million, one hundred fifty-five thousand, five hundred fifty-five".