54798489761 has 2 divisors, whose sum is σ = 54798489762. Its totient is φ = 54798489760.

The previous prime is 54798489737. The next prime is 54798489793. The reversal of 54798489761 is 16798489745.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33205950625 + 21592539136 = 182225^2 + 146944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54798489761 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 54798489691 and 54798489700.

It is not a weakly prime, because it can be changed into another prime (54798485761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27399244880 + 27399244881.

It is an arithmetic number, because the mean of its divisors is an integer number (27399244881).

Almost surely, 2^54798489761 is an apocalyptic number.

It is an amenable number.

54798489761 is a deficient number, since it is larger than the sum of its proper divisors (1).

54798489761 is an equidigital number, since it uses as much as digits as its factorization.

54798489761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 121927680, while the sum is 68.

The spelling of 54798489761 in words is "fifty-four billion, seven hundred ninety-eight million, four hundred eighty-nine thousand, seven hundred sixty-one".