8001021357105 has 48 divisors (see below), whose sum is σ = 14891998861440. Its totient is φ = 3657535596288.

The previous prime is 8001021357071. The next prime is 8001021357107. The reversal of 8001021357105 is 5017531201008.

It is not a de Polignac number, because 8001021357105 - 2¹¹ = 8001021355057 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8001021357107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54593916 + ... + 54740274.

It is an arithmetic number, because the mean of its divisors is an integer number (310249976280).

Almost surely, 2^{8001021357105} is an apocalyptic number.

It is an amenable number.

8001021357105 is a deficient number, since it is larger than the sum of its proper divisors (6890977504335).

8001021357105 is a wasteful number, since it uses less digits than its factorization.

8001021357105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220758 (or 220751 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 33.

The spelling of 8001021357105 in words is "eight trillion, one billion, twenty-one million, three hundred fifty-seven thousand, one hundred five".