55394744749361 has 2 divisors, whose sum is σ = 55394744749362. Its totient is φ = 55394744749360.

The previous prime is 55394744749343. The next prime is 55394744749381. The reversal of 55394744749361 is 16394744749355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54137868328336 + 1256876421025 = 7357844^2 + 1121105^2 .

It is a cyclic number.

It is not a de Polignac number, because 55394744749361 - 2²² = 55394740555057 is a prime.

It is not a weakly prime, because it can be changed into another prime (55394744749381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27697372374680 + 27697372374681.

It is an arithmetic number, because the mean of its divisors is an integer number (27697372374681).

Almost surely, 2^{55394744749361} is an apocalyptic number.

It is an amenable number.

55394744749361 is a deficient number, since it is larger than the sum of its proper divisors (1).

55394744749361 is an equidigital number, since it uses as much as digits as its factorization.

55394744749361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1371686400, while the sum is 71.

The spelling of 55394744749361 in words is "fifty-five trillion, three hundred ninety-four billion, seven hundred forty-four million, seven hundred forty-nine thousand, three hundred sixty-one".