11497898880 has 384 divisors, whose sum is σ = 43225902720. Its totient is φ = 2799304704.

The previous prime is 11497898869. The next prime is 11497898897. The reversal of 11497898880 is 8889879411.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7262569 + ... + 7264151.

It is an arithmetic number, because the mean of its divisors is an integer number (112567455).

Almost surely, 2^11497898880 is an apocalyptic number.

11497898880 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 11497898880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21612951360).

11497898880 is an abundant number, since it is smaller than the sum of its proper divisors (31728003840).

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

11497898880 is a wasteful number, since it uses less digits than its factorization.

11497898880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1718 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 9289728, while the sum is 63.

The spelling of 11497898880 in words is "eleven billion, four hundred ninety-seven million, eight hundred ninety-eight thousand, eight hundred eighty".