8121240841320 has 48 divisors (see below), whose sum is σ = 26394032735460. Its totient is φ = 2165664224256.

The previous prime is 8121240841283. The next prime is 8121240841333. The reversal of 8121240841320 is 231480421218.

8121240841320 is a `hidden beast` number, since 8 + 1 + 212 + 4 + 0 + 8 + 413 + 20 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8020257984036 + 100982857284 = 2832006^2 + 317778^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11279500809 + ... + 11279501528.

Almost surely, 2^{8121240841320} is an apocalyptic number.

It is an amenable number.

8121240841320 is an abundant number, since it is smaller than the sum of its proper divisors (18272791894140).

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

8121240841320 is a wasteful number, since it uses less digits than its factorization.

8121240841320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22559002354 (or 22559002347 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The spelling of 8121240841320 in words is "eight trillion, one hundred twenty-one billion, two hundred forty million, eight hundred forty-one thousand, three hundred twenty".