9953687871 has 96 divisors (see below), whose sum is σ = 15970406400. Its totient is φ = 5952061440.

The previous prime is 9953687857. The next prime is 9953687879. The reversal of 9953687871 is 1787863599.

9953687871 is a `hidden beast` number, since 99 + 536 + 8 + 7 + 8 + 7 + 1 = 666.

9953687871 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

9953687871 is a nontrivial binomial coefficient, being equal to C(141094, 2).

It is not a de Polignac number, because 9953687871 - 2⁵ = 9953687839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9953687799 and 9953687808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9953687879) 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 95 ways as a sum of consecutive naturals, for example, 38730175 + ... + 38730431.

It is an arithmetic number, because the mean of its divisors is an integer number (166358400).

Almost surely, 2^9953687871 is an apocalyptic number.

9953687871 is the 141093-rd triangular number and also the 70547-th hexagonal number.

9953687871 is a deficient number, since it is larger than the sum of its proper divisors (6016718529).

9953687871 is a wasteful number, since it uses less digits than its factorization.

9953687871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 466 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 63.

The square root of 9953687871 is about 99768.1706307177. The cubic root of 9953687871 is about 2151.1036605823.

The spelling of 9953687871 in words is "nine billion, nine hundred fifty-three million, six hundred eighty-seven thousand, eight hundred seventy-one".