47671045861 has 2 divisors, whose sum is σ = 47671045862. Its totient is φ = 47671045860.

The previous prime is 47671045823. The next prime is 47671045867. The reversal of 47671045861 is 16854017674.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28618488900 + 19052556961 = 169170^2 + 138031^2 .

It is a cyclic number.

It is not a de Polignac number, because 47671045861 - 2¹⁷ = 47670914789 is a prime.

It is a super-2 number, since 2×47671045861² (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 (47671045867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23835522930 + 23835522931.

It is an arithmetic number, because the mean of its divisors is an integer number (23835522931).

Almost surely, 2^47671045861 is an apocalyptic number.

It is an amenable number.

47671045861 is a deficient number, since it is larger than the sum of its proper divisors (1).

47671045861 is an equidigital number, since it uses as much as digits as its factorization.

47671045861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 47671045861 in words is "forty-seven billion, six hundred seventy-one million, forty-five thousand, eight hundred sixty-one".