8002040705840 has 20 divisors (see below), whose sum is σ = 18604744641264. Its totient is φ = 3200816282304.

The previous prime is 8002040705809. The next prime is 8002040705887. The reversal of 8002040705840 is 485070402008.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 8002040705794 and 8002040705803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50012754332 + ... + 50012754491.

Almost surely, 2^{8002040705840} is an apocalyptic number.

8002040705840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8002040705840 is an abundant number, since it is smaller than the sum of its proper divisors (10602703935424).

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

8002040705840 is a wasteful number, since it uses less digits than its factorization.

8002040705840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100025508836 (or 100025508830 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The spelling of 8002040705840 in words is "eight trillion, two billion, forty million, seven hundred five thousand, eight hundred forty".