47971515071 has 2 divisors, whose sum is σ = 47971515072. Its totient is φ = 47971515070.

The previous prime is 47971515061. The next prime is 47971515091. The reversal of 47971515071 is 17051517974.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47971515071 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47971515061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23985757535 + 23985757536.

It is an arithmetic number, because the mean of its divisors is an integer number (23985757536).

Almost surely, 2^47971515071 is an apocalyptic number.

47971515071 is a deficient number, since it is larger than the sum of its proper divisors (1).

47971515071 is an equidigital number, since it uses as much as digits as its factorization.

47971515071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 308700, while the sum is 47.

The spelling of 47971515071 in words is "forty-seven billion, nine hundred seventy-one million, five hundred fifteen thousand, seventy-one".