47641006781 has 2 divisors, whose sum is σ = 47641006782. Its totient is φ = 47641006780.

The previous prime is 47641006741. The next prime is 47641006793. The reversal of 47641006781 is 18760014674.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35516794681 + 12124212100 = 188459^2 + 110110^2 .

It is a cyclic number.

It is not a de Polignac number, because 47641006781 - 2¹⁰ = 47641005757 is a prime.

It is a super-2 number, since 2×47641006781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47641006741) 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, 23820503390 + 23820503391.

It is an arithmetic number, because the mean of its divisors is an integer number (23820503391).

Almost surely, 2^47641006781 is an apocalyptic number.

It is an amenable number.

47641006781 is a deficient number, since it is larger than the sum of its proper divisors (1).

47641006781 is an equidigital number, since it uses as much as digits as its factorization.

47641006781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 47641006781 in words is "forty-seven billion, six hundred forty-one million, six thousand, seven hundred eighty-one".