87443656261279 has 2 divisors, whose sum is σ = 87443656261280. Its totient is φ = 87443656261278.

The previous prime is 87443656261271. The next prime is 87443656261421. The reversal of 87443656261279 is 97216265634478.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87443656261279 - 2³ = 87443656261271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87443656261271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43721828130639 + 43721828130640.

It is an arithmetic number, because the mean of its divisors is an integer number (43721828130640).

Almost surely, 2^{87443656261279} is an apocalyptic number.

87443656261279 is a deficient number, since it is larger than the sum of its proper divisors (1).

87443656261279 is an equidigital number, since it uses as much as digits as its factorization.

87443656261279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 731566080, while the sum is 70.

The spelling of 87443656261279 in words is "eighty-seven trillion, four hundred forty-three billion, six hundred fifty-six million, two hundred sixty-one thousand, two hundred seventy-nine".