549065587957 has 2 divisors, whose sum is σ = 549065587958. Its totient is φ = 549065587956.

The previous prime is 549065587943. The next prime is 549065587981. The reversal of 549065587957 is 759785560945.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352350275281 + 196715312676 = 593591^2 + 443526^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-549065587957 is a prime.

It is a super-3 number, since 3×549065587957³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (549065587907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274532793978 + 274532793979.

It is an arithmetic number, because the mean of its divisors is an integer number (274532793979).

Almost surely, 2^549065587957 is an apocalyptic number.

It is an amenable number.

549065587957 is a deficient number, since it is larger than the sum of its proper divisors (1).

549065587957 is an equidigital number, since it uses as much as digits as its factorization.

549065587957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 476280000, while the sum is 70.

The spelling of 549065587957 in words is "five hundred forty-nine billion, sixty-five million, five hundred eighty-seven thousand, nine hundred fifty-seven".