11131773198 has 256 divisors, whose sum is σ = 29355540480. Its totient is φ = 2736115200.

The previous prime is 11131773187. The next prime is 11131773227. The reversal of 11131773198 is 89137713111.

It is a super-2 number, since 2×11131773198² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 70902936 + ... + 70903092.

It is an arithmetic number, because the mean of its divisors is an integer number (114670080).

Almost surely, 2^11131773198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11131773198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14677770240).

11131773198 is an abundant number, since it is smaller than the sum of its proper divisors (18223767282).

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

11131773198 is a wasteful number, since it uses less digits than its factorization.

11131773198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its digits is 31752, while the sum is 42.

The spelling of 11131773198 in words is "eleven billion, one hundred thirty-one million, seven hundred seventy-three thousand, one hundred ninety-eight".