8261084691888 has 160 divisors (see below), whose sum is σ = 25900748198400. Its totient is φ = 2216294535168.

The previous prime is 8261084691883. The next prime is 8261084691901. The reversal of 8261084691888 is 8881964801628.

It is not an unprimeable number, because it can be changed into a prime (8261084691883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5004403 + ... + 6447186.

It is an arithmetic number, because the mean of its divisors is an integer number (161879676240).

Almost surely, 2^{8261084691888} is an apocalyptic number.

It is an amenable number.

8261084691888 is an abundant number, since it is smaller than the sum of its proper divisors (17639663506512).

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

8261084691888 is a wasteful number, since it uses less digits than its factorization.

8261084691888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11451739 (or 11451733 counting only the distinct ones).

The product of its (nonzero) digits is 84934656, while the sum is 69.

The spelling of 8261084691888 in words is "eight trillion, two hundred sixty-one billion, eighty-four million, six hundred ninety-one thousand, eight hundred eighty-eight".