54042445135121 has 8 divisors (see below), whose sum is σ = 54087561583464. Its totient is φ = 53997329617920.

The previous prime is 54042445135117. The next prime is 54042445135127. The reversal of 54042445135121 is 12153154424045.

It can be written as a sum of positive squares in 4 ways, for example, as 1150279845121 + 52892165290000 = 1072511^2 + 7272700^2 .

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 54042445135121 - 2² = 54042445135117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54042445135127) 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, 164149745 + ... + 164478641.

It is an arithmetic number, because the mean of its divisors is an integer number (6760945197933).

Almost surely, 2^{54042445135121} is an apocalyptic number.

It is an amenable number.

54042445135121 is a deficient number, since it is larger than the sum of its proper divisors (45116448343).

54042445135121 is a wasteful number, since it uses less digits than its factorization.

54042445135121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465571.

The product of its (nonzero) digits is 384000, while the sum is 41.

Adding to 54042445135121 its reverse (12153154424045), we get a palindrome (66195599559166).

The spelling of 54042445135121 in words is "fifty-four trillion, forty-two billion, four hundred forty-five million, one hundred thirty-five thousand, one hundred twenty-one".