10917958220 has 96 divisors (see below), whose sum is σ = 26138246400. Its totient is φ = 3797432064.

The previous prime is 10917958217. The next prime is 10917958243. The reversal of 10917958220 is 2285971901.

It is a happy number.

It is a super-3 number, since 3×10917958220³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 878087 + ... + 890433.

It is an arithmetic number, because the mean of its divisors is an integer number (272273400).

Almost surely, 2^10917958220 is an apocalyptic number.

10917958220 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 10917958220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13069123200).

10917958220 is an abundant number, since it is smaller than the sum of its proper divisors (15220288180).

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

10917958220 is a wasteful number, since it uses less digits than its factorization.

10917958220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12567 (or 12565 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 44.

The spelling of 10917958220 in words is "ten billion, nine hundred seventeen million, nine hundred fifty-eight thousand, two hundred twenty".