54121612145 has 4 divisors (see below), whose sum is σ = 64945934580. Its totient is φ = 43297289712.

The previous prime is 54121612141. The next prime is 54121612183.

It is a happy number.

54121612145 is nontrivially palindromic in base 10.

54121612145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20446426081 + 33675186064 = 142991^2 + 183508^2 .

It is a cyclic number.

It is not a de Polignac number, because 54121612145 - 2² = 54121612141 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54121612141) 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, 5412161210 + ... + 5412161219.

It is an arithmetic number, because the mean of its divisors is an integer number (16236483645).

Almost surely, 2^54121612145 is an apocalyptic number.

It is an amenable number.

54121612145 is a deficient number, since it is larger than the sum of its proper divisors (10824322435).

54121612145 is a wasteful number, since it uses less digits than its factorization.

54121612145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10824322434.

The product of its digits is 9600, while the sum is 32.

The spelling of 54121612145 in words is "fifty-four billion, one hundred twenty-one million, six hundred twelve thousand, one hundred forty-five".