54138120973 has 2 divisors, whose sum is σ = 54138120974. Its totient is φ = 54138120972.

The previous prime is 54138120961. The next prime is 54138120979. The reversal of 54138120973 is 37902183145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47599457929 + 6538663044 = 218173^2 + 80862^2 .

It is a cyclic number.

It is not a de Polignac number, because 54138120973 - 2¹³ = 54138112781 is a prime.

It is a super-2 number, since 2×54138120973² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54138120979) 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 as a sum of consecutive naturals, namely, 27069060486 + 27069060487.

It is an arithmetic number, because the mean of its divisors is an integer number (27069060487).

Almost surely, 2^54138120973 is an apocalyptic number.

It is an amenable number.

54138120973 is a deficient number, since it is larger than the sum of its proper divisors (1).

54138120973 is an equidigital number, since it uses as much as digits as its factorization.

54138120973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 54138120973 in words is "fifty-four billion, one hundred thirty-eight million, one hundred twenty thousand, nine hundred seventy-three".