87443656261271 has 2 divisors, whose sum is σ = 87443656261272. Its totient is φ = 87443656261270.

The previous prime is 87443656261261. The next prime is 87443656261279. The reversal of 87443656261271 is 17216265634478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87443656261271 - 2³⁸ = 87168778354327 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87443656261279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43721828130635 + 43721828130636.

It is an arithmetic number, because the mean of its divisors is an integer number (43721828130636).

Almost surely, 2^{87443656261271} is an apocalyptic number.

87443656261271 is a deficient number, since it is larger than the sum of its proper divisors (1).

87443656261271 is an equidigital number, since it uses as much as digits as its factorization.

87443656261271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81285120, while the sum is 62.

The spelling of 87443656261271 in words is "eighty-seven trillion, four hundred forty-three billion, six hundred fifty-six million, two hundred sixty-one thousand, two hundred seventy-one".