549732769381 has 2 divisors, whose sum is σ = 549732769382. Its totient is φ = 549732769380.

The previous prime is 549732769373. The next prime is 549732769403. The reversal of 549732769381 is 183967237945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 524313569025 + 25419200356 = 724095^2 + 159434^2 .

It is a cyclic number.

It is not a de Polignac number, because 549732769381 - 2³ = 549732769373 is a prime.

It is a super-2 number, since 2×549732769381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549732769361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274866384690 + 274866384691.

It is an arithmetic number, because the mean of its divisors is an integer number (274866384691).

Almost surely, 2^549732769381 is an apocalyptic number.

It is an amenable number.

549732769381 is a deficient number, since it is larger than the sum of its proper divisors (1).

549732769381 is an equidigital number, since it uses as much as digits as its factorization.

549732769381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68584320, while the sum is 64.

The spelling of 549732769381 in words is "five hundred forty-nine billion, seven hundred thirty-two million, seven hundred sixty-nine thousand, three hundred eighty-one".