47806827840 has 84 divisors (see below), whose sum is σ = 164435578164. Its totient is φ = 12748486656.

The previous prime is 47806827811. The next prime is 47806827851. The reversal of 47806827840 is 4872860874.

It is a happy number.

47806827840 is a `hidden beast` number, since 478 + 0 + 68 + 2 + 78 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18459026496 + 29347801344 = 135864^2 + 171312^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8296917 + ... + 8302676.

Almost surely, 2^47806827840 is an apocalyptic number.

47806827840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47806827840 is an abundant number, since it is smaller than the sum of its proper divisors (116628750324).

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

47806827840 is a wasteful number, since it uses less digits than its factorization.

47806827840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16599616 (or 16599603 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 54.

The spelling of 47806827840 in words is "forty-seven billion, eight hundred six million, eight hundred twenty-seven thousand, eight hundred forty".