10917434880 has 640 divisors, whose sum is σ = 43062243840. Its totient is φ = 2599649280.

The previous prime is 10917434851. The next prime is 10917434881. The reversal of 10917434880 is 8843471901.

It is a happy number.

10917434880 is a `hidden beast` number, since 10 + 91 + 74 + 3 + 488 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (640).

It is a super-2 number, since 2×10917434880² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10917434881) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 63106474 + ... + 63106646.

It is an arithmetic number, because the mean of its divisors is an integer number (67284756).

Almost surely, 2^10917434880 is an apocalyptic number.

10917434880 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 10917434880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21531121920).

10917434880 is an abundant number, since it is smaller than the sum of its proper divisors (32144808960).

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

10917434880 is a wasteful number, since it uses less digits than its factorization.

10917434880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 10917434880 in words is "ten billion, nine hundred seventeen million, four hundred thirty-four thousand, eight hundred eighty".