29871871461 has 12 divisors (see below), whose sum is σ = 43284377292. Its totient is φ = 19851757056.

The previous prime is 29871871441. The next prime is 29871871517. The reversal of 29871871461 is 16417817892.

29871871461 is a `hidden beast` number, since 29 + 87 + 1 + 87 + 1 + 461 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16872451236 + 12999420225 = 129894^2 + 114015^2 .

It is not a de Polignac number, because 29871871461 - 2⁶ = 29871871397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 29871871398 and 29871871407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29871871441) 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 11 ways as a sum of consecutive naturals, for example, 5232316 + ... + 5238021.

It is an arithmetic number, because the mean of its divisors is an integer number (3607031441).

Almost surely, 2^29871871461 is an apocalyptic number.

It is an amenable number.

29871871461 is a deficient number, since it is larger than the sum of its proper divisors (13412505831).

29871871461 is a wasteful number, since it uses less digits than its factorization.

29871871461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10470660 (or 10470657 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 54.

The spelling of 29871871461 in words is "twenty-nine billion, eight hundred seventy-one million, eight hundred seventy-one thousand, four hundred sixty-one".