8672124257991 has 16 divisors (see below), whose sum is σ = 12864211953120. Its totient is φ = 5773936965120.

The previous prime is 8672124257977. The next prime is 8672124257999. The reversal of 8672124257991 is 1997524212768.

8672124257991 is a `hidden beast` number, since 8 + 6 + 7 + 2 + 12 + 42 + 579 + 9 + 1 = 666.

It is not a de Polignac number, because 8672124257991 - 2⁵ = 8672124257959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8672124257999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207734490 + ... + 207776231.

It is an arithmetic number, because the mean of its divisors is an integer number (804013247070).

Almost surely, 2^{8672124257991} is an apocalyptic number.

8672124257991 is a deficient number, since it is larger than the sum of its proper divisors (4192087695129).

8672124257991 is a wasteful number, since it uses less digits than its factorization.

8672124257991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415511503 (or 415511497 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 63.

The spelling of 8672124257991 in words is "eight trillion, six hundred seventy-two billion, one hundred twenty-four million, two hundred fifty-seven thousand, nine hundred ninety-one".