47731517737 has 2 divisors, whose sum is σ = 47731517738. Its totient is φ = 47731517736.

The previous prime is 47731517723. The next prime is 47731517747. The reversal of 47731517737 is 73771513774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34676398656 + 13055119081 = 186216^2 + 114259^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47731517737 is a prime.

It is not a weakly prime, because it can be changed into another prime (47731517747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23865758868 + 23865758869.

It is an arithmetic number, because the mean of its divisors is an integer number (23865758869).

Almost surely, 2^47731517737 is an apocalyptic number.

It is an amenable number.

47731517737 is a deficient number, since it is larger than the sum of its proper divisors (1).

47731517737 is an equidigital number, since it uses as much as digits as its factorization.

47731517737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3025260, while the sum is 52.

The spelling of 47731517737 in words is "forty-seven billion, seven hundred thirty-one million, five hundred seventeen thousand, seven hundred thirty-seven".