11391157008 has 600 divisors, whose sum is σ = 43719255360. Its totient is φ = 2826109440.

The previous prime is 11391156983. The next prime is 11391157009. The reversal of 11391157008 is 80075119311.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (11391157009) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 16066158 + ... + 16066866.

Almost surely, 2^11391157008 is an apocalyptic number.

11391157008 is a gapful number since it is divisible by the number (18) 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 11391157008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21859627680).

11391157008 is an abundant number, since it is smaller than the sum of its proper divisors (32328098352).

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

11391157008 is a wasteful number, since it uses less digits than its factorization.

11391157008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 755 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 36.

The spelling of 11391157008 in words is "eleven billion, three hundred ninety-one million, one hundred fifty-seven thousand, eight".