10001813870871 has 10 divisors (see below), whose sum is σ = 14940981214632. Its totient is φ = 6667875913860.

The previous prime is 10001813870861. The next prime is 10001813870879. The reversal of 10001813870871 is 17807831810001.

10001813870871 is a `hidden beast` number, since 10 + 0 + 0 + 181 + 387 + 0 + 87 + 1 = 666.

It is not a de Polignac number, because 10001813870871 - 2⁹ = 10001813870359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001813870879) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 61739591715 + ... + 61739591876.

Almost surely, 2^{10001813870871} is an apocalyptic number.

10001813870871 is a deficient number, since it is larger than the sum of its proper divisors (4939167343761).

10001813870871 is an equidigital number, since it uses as much as digits as its factorization.

10001813870871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123479183603 (or 123479183594 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 45.

The spelling of 10001813870871 in words is "ten trillion, one billion, eight hundred thirteen million, eight hundred seventy thousand, eight hundred seventy-one".