35557991549 has 2 divisors, whose sum is σ = 35557991550. Its totient is φ = 35557991548.

The previous prime is 35557991527. The next prime is 35557991621. The reversal of 35557991549 is 94519975553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26538690649 + 9019300900 = 162907^2 + 94970^2 .

It is a cyclic number.

It is not a de Polignac number, because 35557991549 - 2²⁰ = 35556942973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 35557991491 and 35557991500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (35557991509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17778995774 + 17778995775.

It is an arithmetic number, because the mean of its divisors is an integer number (17778995775).

Almost surely, 2^35557991549 is an apocalyptic number.

It is an amenable number.

35557991549 is a deficient number, since it is larger than the sum of its proper divisors (1).

35557991549 is an equidigital number, since it uses as much as digits as its factorization.

35557991549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38272500, while the sum is 62.

The spelling of 35557991549 in words is "thirty-five billion, five hundred fifty-seven million, nine hundred ninety-one thousand, five hundred forty-nine".