54121122665537 has 8 divisors (see below), whose sum is σ = 54200827615080. Its totient is φ = 54041473399680.

The previous prime is 54121122665479. The next prime is 54121122665563. The reversal of 54121122665537 is 73556622112145.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6276247499536 + 47844875166001 = 2505244^2 + 6916999^2 .

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 54121122665537 - 2⁶ = 54121122665473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54121122665737) 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, 11975414 + ... + 15863567.

It is an arithmetic number, because the mean of its divisors is an integer number (6775103451885).

Almost surely, 2^{54121122665537} is an apocalyptic number.

It is an amenable number.

54121122665537 is a deficient number, since it is larger than the sum of its proper divisors (79704949543).

54121122665537 is a wasteful number, since it uses less digits than its factorization.

54121122665537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27841843.

The product of its digits is 3024000, while the sum is 50.

The spelling of 54121122665537 in words is "fifty-four trillion, one hundred twenty-one billion, one hundred twenty-two million, six hundred sixty-five thousand, five hundred thirty-seven".