52367178121 has 4 divisors (see below), whose sum is σ = 52367655492. Its totient is φ = 52366700752.

The previous prime is 52367178109. The next prime is 52367178137. The reversal of 52367178121 is 12187176325.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 38722368400 + 13644809721 = 196780^2 + 116811^2 .

It is a cyclic number.

It is not a de Polignac number, because 52367178121 - 2²⁷ = 52232960393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52367178161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17571 + ... + 324103.

It is an arithmetic number, because the mean of its divisors is an integer number (13091913873).

Almost surely, 2^52367178121 is an apocalyptic number.

It is an amenable number.

52367178121 is a deficient number, since it is larger than the sum of its proper divisors (477371).

52367178121 is a wasteful number, since it uses less digits than its factorization.

52367178121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477370.

The product of its digits is 141120, while the sum is 43.

The spelling of 52367178121 in words is "fifty-two billion, three hundred sixty-seven million, one hundred seventy-eight thousand, one hundred twenty-one".