8261421360192 has 1792 divisors, whose sum is σ = 34453523005440. Its totient is φ = 1871764070400.

The previous prime is 8261421360169. The next prime is 8261421360193. The reversal of 8261421360192 is 2910631241628.

8261421360192 is a `hidden beast` number, since 8 + 2 + 6 + 1 + 421 + 36 + 0 + 192 = 666.

It is not an unprimeable number, because it can be changed into a prime (8261421360193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2305725633 + ... + 2305729215.

It is an arithmetic number, because the mean of its divisors is an integer number (19226296320).

Almost surely, 2^{8261421360192} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8261421360192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17226761502720).

8261421360192 is an abundant number, since it is smaller than the sum of its proper divisors (26192101645248).

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

8261421360192 is a wasteful number, since it uses less digits than its factorization.

8261421360192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709 (or 3693 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 8261421360192 in words is "eight trillion, two hundred sixty-one billion, four hundred twenty-one million, three hundred sixty thousand, one hundred ninety-two".