47156318771 has 2 divisors, whose sum is σ = 47156318772. Its totient is φ = 47156318770.

The previous prime is 47156318669. The next prime is 47156318773. The reversal of 47156318771 is 17781365174.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47156318771 - 2¹⁴ = 47156302387 is a prime.

Together with 47156318773, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47156318773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23578159385 + 23578159386.

It is an arithmetic number, because the mean of its divisors is an integer number (23578159386).

Almost surely, 2^47156318771 is an apocalyptic number.

47156318771 is a deficient number, since it is larger than the sum of its proper divisors (1).

47156318771 is an equidigital number, since it uses as much as digits as its factorization.

47156318771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 987840, while the sum is 50.

The spelling of 47156318771 in words is "forty-seven billion, one hundred fifty-six million, three hundred eighteen thousand, seven hundred seventy-one".