12055415451 has 4 divisors (see below), whose sum is σ = 16073887272. Its totient is φ = 8036943632.

The previous prime is 12055415429. The next prime is 12055415453. The reversal of 12055415451 is 15451455021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15451455021 = 3 ⋅5150485007.

It is a cyclic number.

It is not a de Polignac number, because 12055415451 - 2⁶ = 12055415387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12055415453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2009235906 + ... + 2009235911.

It is an arithmetic number, because the mean of its divisors is an integer number (4018471818).

Almost surely, 2^12055415451 is an apocalyptic number.

12055415451 is a deficient number, since it is larger than the sum of its proper divisors (4018471821).

12055415451 is an equidigital number, since it uses as much as digits as its factorization.

12055415451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4018471820.

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 12055415451 in words is "twelve billion, fifty-five million, four hundred fifteen thousand, four hundred fifty-one".