911132609940 has 720 divisors, whose sum is σ = 3462844104720. Its totient is φ = 199717539840.

The previous prime is 911132609927. The next prime is 911132609999. The reversal of 911132609940 is 49906231119.

911132609940 is a `hidden beast` number, since 9 + 1 + 1 + 1 + 32 + 609 + 9 + 4 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 244081450116 + 667051159824 = 494046^2 + 816732^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 361415880 + ... + 361418400.

It is an arithmetic number, because the mean of its divisors is an integer number (4809505701).

Almost surely, 2^911132609940 is an apocalyptic number.

911132609940 is a gapful number since it is divisible by the number (90) 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 911132609940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1731422052360).

911132609940 is an abundant number, since it is smaller than the sum of its proper divisors (2551711494780).

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

911132609940 is a wasteful number, since it uses less digits than its factorization.

911132609940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742 (or 2724 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The spelling of 911132609940 in words is "nine hundred eleven billion, one hundred thirty-two million, six hundred nine thousand, nine hundred forty".