8172058546640 has 40 divisors (see below), whose sum is σ = 20000038025760. Its totient is φ = 3096780080256.

The previous prime is 8172058546577. The next prime is 8172058546643. The reversal of 8172058546640 is 466458502718.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8172058546643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2688175634 + ... + 2688178673.

It is an arithmetic number, because the mean of its divisors is an integer number (500000950644).

Almost surely, 2^{8172058546640} is an apocalyptic number.

8172058546640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8172058546640 is an abundant number, since it is smaller than the sum of its proper divisors (11827979479120).

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

8172058546640 is a wasteful number, since it uses less digits than its factorization.

8172058546640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5376354339 (or 5376354333 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 56.

The spelling of 8172058546640 in words is "eight trillion, one hundred seventy-two billion, fifty-eight million, five hundred forty-six thousand, six hundred forty".