54120767971 has 4 divisors (see below), whose sum is σ = 55440786744. Its totient is φ = 52800749200.

The previous prime is 54120767929. The next prime is 54120768011. The reversal of 54120767971 is 17976702145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17976702145 = 5 ⋅3595340429.

It is a cyclic number.

It is not a de Polignac number, because 54120767971 - 2²¹ = 54118670819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54120765971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660009325 + ... + 660009406.

It is an arithmetic number, because the mean of its divisors is an integer number (13860196686).

Almost surely, 2^54120767971 is an apocalyptic number.

54120767971 is a deficient number, since it is larger than the sum of its proper divisors (1320018773).

54120767971 is a wasteful number, since it uses less digits than its factorization.

54120767971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320018772.

The product of its (nonzero) digits is 740880, while the sum is 49.

The spelling of 54120767971 in words is "fifty-four billion, one hundred twenty million, seven hundred sixty-seven thousand, nine hundred seventy-one".