54321611595961 has 2 divisors, whose sum is σ = 54321611595962. Its totient is φ = 54321611595960.

The previous prime is 54321611595931. The next prime is 54321611595971. The reversal of 54321611595961 is 16959511612345.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43979856056361 + 10341755539600 = 6631731^2 + 3215860^2 .

It is a cyclic number.

It is not a de Polignac number, because 54321611595961 - 2¹³ = 54321611587769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 54321611595896 and 54321611595905.

It is not a weakly prime, because it can be changed into another prime (54321611595931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27160805797980 + 27160805797981.

It is an arithmetic number, because the mean of its divisors is an integer number (27160805797981).

Almost surely, 2^{54321611595961} is an apocalyptic number.

It is an amenable number.

54321611595961 is a deficient number, since it is larger than the sum of its proper divisors (1).

54321611595961 is an equidigital number, since it uses as much as digits as its factorization.

54321611595961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748000, while the sum is 58.

The spelling of 54321611595961 in words is "fifty-four trillion, three hundred twenty-one billion, six hundred eleven million, five hundred ninety-five thousand, nine hundred sixty-one".