8917855378700 has 144 divisors (see below), whose sum is σ = 19654992000000. Its totient is φ = 3511532943360.

The previous prime is 8917855378633. The next prime is 8917855378721. The reversal of 8917855378700 is 78735587198.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7139995676 + ... + 7139996924.

It is an arithmetic number, because the mean of its divisors is an integer number (136493000000).

Almost surely, 2^{8917855378700} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8917855378700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9827496000000).

8917855378700 is an abundant number, since it is smaller than the sum of its proper divisors (10737136621300).

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

8917855378700 is a wasteful number, since it uses less digits than its factorization.

8917855378700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3304 (or 3297 counting only the distinct ones).

The product of its (nonzero) digits is 118540800, while the sum is 68.

The spelling of 8917855378700 in words is "eight trillion, nine hundred seventeen billion, eight hundred fifty-five million, three hundred seventy-eight thousand, seven hundred".