47974792847 has 2 divisors, whose sum is σ = 47974792848. Its totient is φ = 47974792846.

The previous prime is 47974792841. The next prime is 47974792867. The reversal of 47974792847 is 74829747974.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47974792847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47974792841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23987396423 + 23987396424.

It is an arithmetic number, because the mean of its divisors is an integer number (23987396424).

Almost surely, 2^47974792847 is an apocalyptic number.

47974792847 is a deficient number, since it is larger than the sum of its proper divisors (1).

47974792847 is an equidigital number, since it uses as much as digits as its factorization.

47974792847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 199148544, while the sum is 68.

The spelling of 47974792847 in words is "forty-seven billion, nine hundred seventy-four million, seven hundred ninety-two thousand, eight hundred forty-seven".