47129835861 has 12 divisors (see below), whose sum is σ = 68399069440. Its totient is φ = 31270979880.

The previous prime is 47129835821. The next prime is 47129835869. The reversal of 47129835861 is 16853892174.

47129835861 is a `hidden beast` number, since 47 + 12 + 9 + 8 + 3 + 586 + 1 = 666.

47129835861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47129835861 - 2¹⁸ = 47129573717 is a prime.

It is a super-2 number, since 2×47129835861² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47129835798 and 47129835807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47129835869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12407221 + ... + 12411018.

Almost surely, 2^47129835861 is an apocalyptic number.

It is an amenable number.

47129835861 is a deficient number, since it is larger than the sum of its proper divisors (21269233579).

47129835861 is a wasteful number, since it uses less digits than its factorization.

47129835861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24818456 (or 24818453 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 47129835861 in words is "forty-seven billion, one hundred twenty-nine million, eight hundred thirty-five thousand, eight hundred sixty-one".