54511613439961 has 2 divisors, whose sum is σ = 54511613439962. Its totient is φ = 54511613439960.

The previous prime is 54511613439919. The next prime is 54511613440027. The reversal of 54511613439961 is 16993431611545.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28533427705561 + 25978185734400 = 5341669^2 + 5096880^2 .

It is a cyclic number.

It is not a de Polignac number, because 54511613439961 - 2¹⁵ = 54511613407193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54511613439896 and 54511613439905.

It is not a weakly prime, because it can be changed into another prime (54511613439901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27255806719980 + 27255806719981.

It is an arithmetic number, because the mean of its divisors is an integer number (27255806719981).

Almost surely, 2^{54511613439961} is an apocalyptic number.

It is an amenable number.

54511613439961 is a deficient number, since it is larger than the sum of its proper divisors (1).

54511613439961 is an equidigital number, since it uses as much as digits as its factorization.

54511613439961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10497600, while the sum is 58.

The spelling of 54511613439961 in words is "fifty-four trillion, five hundred eleven billion, six hundred thirteen million, four hundred thirty-nine thousand, nine hundred sixty-one".