47631488521 has 2 divisors, whose sum is σ = 47631488522. Its totient is φ = 47631488520.

The previous prime is 47631488491. The next prime is 47631488533. The reversal of 47631488521 is 12588413674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43927548921 + 3703939600 = 209589^2 + 60860^2 .

It is a cyclic number.

It is not a de Polignac number, because 47631488521 - 2²³ = 47623099913 is a prime.

It is not a weakly prime, because it can be changed into another prime (47631488581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23815744260 + 23815744261.

It is an arithmetic number, because the mean of its divisors is an integer number (23815744261).

Almost surely, 2^47631488521 is an apocalyptic number.

It is an amenable number.

47631488521 is a deficient number, since it is larger than the sum of its proper divisors (1).

47631488521 is an equidigital number, since it uses as much as digits as its factorization.

47631488521 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1290240, while the sum is 49.

It can be divided in two parts, 4763 and 1488521, that added together give a square (1493284 = 1222²).

The spelling of 47631488521 in words is "forty-seven billion, six hundred thirty-one million, four hundred eighty-eight thousand, five hundred twenty-one".