12155915455 has 8 divisors (see below), whose sum is σ = 15057650304. Its totient is φ = 9411031200.

The previous prime is 12155915423. The next prime is 12155915459. The reversal of 12155915455 is 55451955121.

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

It is not a de Polignac number, because 12155915455 - 2⁵ = 12155915423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12155915459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39212476 + ... + 39212785.

It is an arithmetic number, because the mean of its divisors is an integer number (1882206288).

Almost surely, 2^12155915455 is an apocalyptic number.

12155915455 is a deficient number, since it is larger than the sum of its proper divisors (2901734849).

12155915455 is an equidigital number, since it uses as much as digits as its factorization.

12155915455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78425297.

The product of its digits is 225000, while the sum is 43.

The spelling of 12155915455 in words is "twelve billion, one hundred fifty-five million, nine hundred fifteen thousand, four hundred fifty-five".