99998521110 has 128 divisors (see below), whose sum is σ = 269090242560. Its totient is φ = 26424050688.

The previous prime is 99998521057. The next prime is 99998521111. The reversal of 99998521110 is 1112589999.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 (99998521111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43992934 + ... + 43995206.

It is an arithmetic number, because the mean of its divisors is an integer number (2102267520).

Almost surely, 2^99998521110 is an apocalyptic number.

99998521110 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99998521110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134545121280).

99998521110 is an abundant number, since it is smaller than the sum of its proper divisors (169091721450).

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

99998521110 is a wasteful number, since it uses less digits than its factorization.

99998521110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699 (or 3693 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 54.

The spelling of 99998521110 in words is "ninety-nine billion, nine hundred ninety-eight million, five hundred twenty-one thousand, one hundred ten".