11123398000 has 640 divisors, whose sum is σ = 35097753600. Its totient is φ = 3345408000.

The previous prime is 11123397973. The next prime is 11123398049. The reversal of 11123398000 is 89332111.

It is a self number, because there is not a number n which added to its sum of digits gives 11123398000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 124981956 + ... + 124982044.

It is an arithmetic number, because the mean of its divisors is an integer number (54840240).

Almost surely, 2^11123398000 is an apocalyptic number.

11123398000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11123398000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17548876800).

11123398000 is an abundant number, since it is smaller than the sum of its proper divisors (23974355600).

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

11123398000 is a wasteful number, since it uses less digits than its factorization.

11123398000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 11123398000 in words is "eleven billion, one hundred twenty-three million, three hundred ninety-eight thousand".