10991140600 has 96 divisors (see below), whose sum is σ = 28557703440. Its totient is φ = 3899264000.

The previous prime is 10991140591. The next prime is 10991140607. The reversal of 10991140600 is 604119901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10991140607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29274 + ... + 151126.

Almost surely, 2^10991140600 is an apocalyptic number.

10991140600 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 10991140600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14278851720).

10991140600 is an abundant number, since it is smaller than the sum of its proper divisors (17566562840).

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

10991140600 is a wasteful number, since it uses less digits than its factorization.

10991140600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121921 (or 121912 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 10991140600 in words is "ten billion, nine hundred ninety-one million, one hundred forty thousand, six hundred".