54121135345 has 4 divisors (see below), whose sum is σ = 64945362420. Its totient is φ = 43296908272.

The previous prime is 54121135307. The next prime is 54121135351. The reversal of 54121135345 is 54353112145.

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 28539372096 + 25581763249 = 168936^2 + 159943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54121135345 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54121135345.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5412113530 + ... + 5412113539.

It is an arithmetic number, because the mean of its divisors is an integer number (16236340605).

Almost surely, 2^54121135345 is an apocalyptic number.

It is an amenable number.

54121135345 is a deficient number, since it is larger than the sum of its proper divisors (10824227075).

54121135345 is a wasteful number, since it uses less digits than its factorization.

54121135345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10824227074.

The product of its digits is 36000, while the sum is 34.

The spelling of 54121135345 in words is "fifty-four billion, one hundred twenty-one million, one hundred thirty-five thousand, three hundred forty-five".