10998521298 has 54 divisors (see below), whose sum is σ = 25169704677. Its totient is φ = 3470547600.

The previous prime is 10998521273. The next prime is 10998521329. The reversal of 10998521298 is 89212589901.

10998521298 is a `hidden beast` number, since 1 + 0 + 9 + 98 + 521 + 29 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5930078049 + 5068443249 = 77007^2 + 71193^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=74157.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8453248 + ... + 8454548.

Almost surely, 2^10998521298 is an apocalyptic number.

10998521298 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 10998521298

10998521298 is an abundant number, since it is smaller than the sum of its proper divisors (14171183379).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10998521298 is an equidigital number, since it uses as much as digits as its factorization.

10998521298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648 (or 1325 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 54.

The spelling of 10998521298 in words is "ten billion, nine hundred ninety-eight million, five hundred twenty-one thousand, two hundred ninety-eight".