8173225578720 has 96 divisors (see below), whose sum is σ = 25754889323520. Its totient is φ = 2178745551360.

The previous prime is 8173225578697. The next prime is 8173225578731. The reversal of 8173225578720 is 278755223718.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1710760 + ... + 4390119.

It is an arithmetic number, because the mean of its divisors is an integer number (268280097120).

Almost surely, 2^{8173225578720} is an apocalyptic number.

8173225578720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8173225578720 is an abundant number, since it is smaller than the sum of its proper divisors (17581663744800).

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

8173225578720 is a wasteful number, since it uses less digits than its factorization.

8173225578720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6103688 (or 6103680 counting only the distinct ones).

The product of its (nonzero) digits is 13171200, while the sum is 57.

The spelling of 8173225578720 in words is "eight trillion, one hundred seventy-three billion, two hundred twenty-five million, five hundred seventy-eight thousand, seven hundred twenty".