5481649228361 has 2 divisors, whose sum is σ = 5481649228362. Its totient is φ = 5481649228360.

The previous prime is 5481649228351. The next prime is 5481649228483. The reversal of 5481649228361 is 1638229461845.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3135222670336 + 2346426558025 = 1770656^2 + 1531805^2 .

It is a cyclic number.

It is not a de Polignac number, because 5481649228361 - 2¹⁴ = 5481649211977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5481649228361.

It is not a weakly prime, because it can be changed into another prime (5481649228351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2740824614180 + 2740824614181.

It is an arithmetic number, because the mean of its divisors is an integer number (2740824614181).

Almost surely, 2^{5481649228361} is an apocalyptic number.

It is an amenable number.

5481649228361 is a deficient number, since it is larger than the sum of its proper divisors (1).

5481649228361 is an equidigital number, since it uses as much as digits as its factorization.

5481649228361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19906560, while the sum is 59.

The spelling of 5481649228361 in words is "five trillion, four hundred eighty-one billion, six hundred forty-nine million, two hundred twenty-eight thousand, three hundred sixty-one".