47871990827 has 4 divisors (see below), whose sum is σ = 47942703456. Its totient is φ = 47801278200.

The previous prime is 47871990811. The next prime is 47871990857. The reversal of 47871990827 is 72809917874.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 47871990827 - 2⁴ = 47871990811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47871990827.

It is not an unprimeable number, because it can be changed into a prime (47871990857) 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 3 ways as a sum of consecutive naturals, for example, 35355299 + ... + 35356652.

It is an arithmetic number, because the mean of its divisors is an integer number (11985675864).

Almost surely, 2^47871990827 is an apocalyptic number.

47871990827 is a deficient number, since it is larger than the sum of its proper divisors (70712629).

47871990827 is an equidigital number, since it uses as much as digits as its factorization.

47871990827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70712628.

The product of its (nonzero) digits is 14224896, while the sum is 62.

The spelling of 47871990827 in words is "forty-seven billion, eight hundred seventy-one million, nine hundred ninety thousand, eight hundred twenty-seven".