9958602557 has 2 divisors, whose sum is σ = 9958602558. Its totient is φ = 9958602556.

The previous prime is 9958602539. The next prime is 9958602569. The reversal of 9958602557 is 7552068599.

9958602557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9327889561 + 630712996 = 96581^2 + 25114^2 .

It is an emirp because it is prime and its reverse (7552068599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9958602557 - 2¹⁶ = 9958537021 is a prime.

It is a super-3 number, since 3×9958602557³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9958605557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4979301278 + 4979301279.

It is an arithmetic number, because the mean of its divisors is an integer number (4979301279).

Almost surely, 2^9958602557 is an apocalyptic number.

It is an amenable number.

9958602557 is a deficient number, since it is larger than the sum of its proper divisors (1).

9958602557 is an equidigital number, since it uses as much as digits as its factorization.

9958602557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804000, while the sum is 56.

The square root of 9958602557 is about 99792.7981219086. The cubic root of 9958602557 is about 2151.4576419296.

The spelling of 9958602557 in words is "nine billion, nine hundred fifty-eight million, six hundred two thousand, five hundred fifty-seven".