8123112908929 has 8 divisors (see below), whose sum is σ = 8214528357000. Its totient is φ = 8031700672512.

The previous prime is 8123112908927. The next prime is 8123112908983. The reversal of 8123112908929 is 9298092113218.

It can be written as a sum of positive squares in 4 ways, for example, as 135836473600 + 7987276435329 = 368560^2 + 2826177^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8123112908929 - 2¹ = 8123112908927 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8123112908929.

It is not an unprimeable number, because it can be changed into a prime (8123112908927) 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 7 ways as a sum of consecutive naturals, for example, 4478437 + ... + 6025165.

It is an arithmetic number, because the mean of its divisors is an integer number (1026816044625).

Almost surely, 2^{8123112908929} is an apocalyptic number.

8123112908929 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

8123112908929 is a deficient number, since it is larger than the sum of its proper divisors (91415448071).

8123112908929 is a wasteful number, since it uses less digits than its factorization.

8123112908929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605827.

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 8123112908929 in words is "eight trillion, one hundred twenty-three billion, one hundred twelve million, nine hundred eight thousand, nine hundred twenty-nine".