98991182585 has 8 divisors (see below), whose sum is σ = 118791449160. Its totient is φ = 79191592704.

The previous prime is 98991182551. The next prime is 98991182621. The reversal of 98991182585 is 58528119989.

It can be written as a sum of positive squares in 4 ways, for example, as 25491634921 + 73499547664 = 159661^2 + 271108^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98991182585 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244721 + ... + 507809.

It is an arithmetic number, because the mean of its divisors is an integer number (14848931145).

Almost surely, 2^98991182585 is an apocalyptic number.

It is an amenable number.

98991182585 is a deficient number, since it is larger than the sum of its proper divisors (19800266575).

98991182585 is a wasteful number, since it uses less digits than its factorization.

98991182585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338347.

The product of its digits is 18662400, while the sum is 65.

The spelling of 98991182585 in words is "ninety-eight billion, nine hundred ninety-one million, one hundred eighty-two thousand, five hundred eighty-five".