47706437381 has 2 divisors, whose sum is σ = 47706437382. Its totient is φ = 47706437380.

The previous prime is 47706437371. The next prime is 47706437407. The reversal of 47706437381 is 18373460774.

47706437381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41385392356 + 6321045025 = 203434^2 + 79505^2 .

It is a cyclic number.

It is not a de Polignac number, because 47706437381 - 2¹⁰ = 47706436357 is a prime.

It is a super-2 number, since 2×47706437381² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47706437351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23853218690 + 23853218691.

It is an arithmetic number, because the mean of its divisors is an integer number (23853218691).

Almost surely, 2^47706437381 is an apocalyptic number.

It is an amenable number.

47706437381 is a deficient number, since it is larger than the sum of its proper divisors (1).

47706437381 is an equidigital number, since it uses as much as digits as its factorization.

47706437381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 50.

The spelling of 47706437381 in words is "forty-seven billion, seven hundred six million, four hundred thirty-seven thousand, three hundred eighty-one".