12445621055 has 8 divisors (see below), whose sum is σ = 17068280352. Its totient is φ = 8534140128.

The previous prime is 12445621051. The next prime is 12445621061. The reversal of 12445621055 is 55012654421.

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

It is a cyclic number.

It is not a de Polignac number, because 12445621055 - 2² = 12445621051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 355589173 = 12445621055 / (1 + 2 + 4 + 4 + 5 + 6 + 2 + 1 + 0 + 5 + 5).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12445621051) 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, 177794552 + ... + 177794621.

It is an arithmetic number, because the mean of its divisors is an integer number (2133535044).

Almost surely, 2^12445621055 is an apocalyptic number.

12445621055 is a deficient number, since it is larger than the sum of its proper divisors (4622659297).

12445621055 is an equidigital number, since it uses as much as digits as its factorization.

12445621055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355589185.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 12445621055 in words is "twelve billion, four hundred forty-five million, six hundred twenty-one thousand, fifty-five".