47278131074791 has 2 divisors, whose sum is σ = 47278131074792. Its totient is φ = 47278131074790.

The previous prime is 47278131074777. The next prime is 47278131074813. The reversal of 47278131074791 is 19747013187274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47278131074791 - 2³⁷ = 47140692121319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47278131074711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23639065537395 + 23639065537396.

It is an arithmetic number, because the mean of its divisors is an integer number (23639065537396).

Almost surely, 2^{47278131074791} is an apocalyptic number.

47278131074791 is a deficient number, since it is larger than the sum of its proper divisors (1).

47278131074791 is an equidigital number, since it uses as much as digits as its factorization.

47278131074791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16595712, while the sum is 61.

The spelling of 47278131074791 in words is "forty-seven trillion, two hundred seventy-eight billion, one hundred thirty-one million, seventy-four thousand, seven hundred ninety-one".