9998555311 has 8 divisors (see below), whose sum is σ = 10215603360. Its totient is φ = 9782559072.

The previous prime is 9998555291. The next prime is 9998555351. The reversal of 9998555311 is 1135558999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9998555311 - 2⁵ = 9998555279 is a prime.

It is a super-2 number, since 2×9998555311² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998555351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243720 + ... + 281773.

It is an arithmetic number, because the mean of its divisors is an integer number (1276950420).

Almost surely, 2^9998555311 is an apocalyptic number.

9998555311 is a deficient number, since it is larger than the sum of its proper divisors (217048049).

9998555311 is a wasteful number, since it uses less digits than its factorization.

9998555311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525905.

The product of its digits is 2187000, while the sum is 55.

The square root of 9998555311 is about 99992.7762940904. The cubic root of 9998555311 is about 2154.3309354320.

The spelling of 9998555311 in words is "nine billion, nine hundred ninety-eight million, five hundred fifty-five thousand, three hundred eleven".