47497989277 has 2 divisors, whose sum is σ = 47497989278. Its totient is φ = 47497989276.

The previous prime is 47497989247. The next prime is 47497989283. The reversal of 47497989277 is 77298979474.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47361075876 + 136913401 = 217626^2 + 11701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47497989277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47497989247) 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, 23748994638 + 23748994639.

It is an arithmetic number, because the mean of its divisors is an integer number (23748994639).

Almost surely, 2^47497989277 is an apocalyptic number.

It is an amenable number.

47497989277 is a deficient number, since it is larger than the sum of its proper divisors (1).

47497989277 is an equidigital number, since it uses as much as digits as its factorization.

47497989277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 448084224, while the sum is 73.

The spelling of 47497989277 in words is "forty-seven billion, four hundred ninety-seven million, nine hundred eighty-nine thousand, two hundred seventy-seven".