98081120991 has 32 divisors (see below), whose sum is σ = 149982688768. Its totient is φ = 55849461120.

The previous prime is 98081120989. The next prime is 98081121001. The reversal of 98081120991 is 19902118089.

It is not a de Polignac number, because 98081120991 - 2¹ = 98081120989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 98081120991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98081120941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10812840 + ... + 10821906.

It is an arithmetic number, because the mean of its divisors is an integer number (4686959024).

Almost surely, 2^98081120991 is an apocalyptic number.

98081120991 is a deficient number, since it is larger than the sum of its proper divisors (51901567777).

98081120991 is a wasteful number, since it uses less digits than its factorization.

98081120991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10831.

The product of its (nonzero) digits is 93312, while the sum is 48.

The spelling of 98081120991 in words is "ninety-eight billion, eighty-one million, one hundred twenty thousand, nine hundred ninety-one".