54123617461 has 2 divisors, whose sum is σ = 54123617462. Its totient is φ = 54123617460.

The previous prime is 54123617459. The next prime is 54123617467. The reversal of 54123617461 is 16471632145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52255216836 + 1868400625 = 228594^2 + 43225^2 .

It is a cyclic number.

It is not a de Polignac number, because 54123617461 - 2¹ = 54123617459 is a prime.

Together with 54123617459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54123617467) 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, 27061808730 + 27061808731.

It is an arithmetic number, because the mean of its divisors is an integer number (27061808731).

Almost surely, 2^54123617461 is an apocalyptic number.

It is an amenable number.

54123617461 is a deficient number, since it is larger than the sum of its proper divisors (1).

54123617461 is an equidigital number, since it uses as much as digits as its factorization.

54123617461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The spelling of 54123617461 in words is "fifty-four billion, one hundred twenty-three million, six hundred seventeen thousand, four hundred sixty-one".