47878217951 has 2 divisors, whose sum is σ = 47878217952. Its totient is φ = 47878217950.

The previous prime is 47878217879. The next prime is 47878217987. The reversal of 47878217951 is 15971287874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47878217951 - 2³⁴ = 30698348767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47878211951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23939108975 + 23939108976.

It is an arithmetic number, because the mean of its divisors is an integer number (23939108976).

Almost surely, 2^47878217951 is an apocalyptic number.

47878217951 is a deficient number, since it is larger than the sum of its proper divisors (1).

47878217951 is an equidigital number, since it uses as much as digits as its factorization.

47878217951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7902720, while the sum is 59.

The spelling of 47878217951 in words is "forty-seven billion, eight hundred seventy-eight million, two hundred seventeen thousand, nine hundred fifty-one".