8723917973376 has 128 divisors (see below), whose sum is σ = 26443558058400. Its totient is φ = 2829378760704.

The previous prime is 8723917973371. The next prime is 8723917973383. The reversal of 8723917973376 is 6733797193278.

It is a happy number.

8723917973376 is a `hidden beast` number, since 8 + 7 + 239 + 17 + 9 + 7 + 3 + 376 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×8723917973376² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8723917973371) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 33984045 + ... + 34239788.

Almost surely, 2^{8723917973376} is an apocalyptic number.

It is an amenable number.

8723917973376 is an abundant number, since it is smaller than the sum of its proper divisors (17719640085024).

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

8723917973376 is a wasteful number, since it uses less digits than its factorization.

8723917973376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68223893 (or 68223875 counting only the distinct ones).

The product of its digits is 504094752, while the sum is 72.

The spelling of 8723917973376 in words is "eight trillion, seven hundred twenty-three billion, nine hundred seventeen million, nine hundred seventy-three thousand, three hundred seventy-six".