87860936266849 has 2 divisors, whose sum is σ = 87860936266850. Its totient is φ = 87860936266848.

The previous prime is 87860936266813. The next prime is 87860936266903. The reversal of 87860936266849 is 94866263906878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54000966646225 + 33859969620624 = 7348535^2 + 5818932^2 .

It is a cyclic number.

It is not a de Polignac number, because 87860936266849 - 2⁷ = 87860936266721 is a prime.

It is not a weakly prime, because it can be changed into another prime (87860936266349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43930468133424 + 43930468133425.

It is an arithmetic number, because the mean of its divisors is an integer number (43930468133425).

Almost surely, 2^{87860936266849} is an apocalyptic number.

It is an amenable number.

87860936266849 is a deficient number, since it is larger than the sum of its proper divisors (1).

87860936266849 is an equidigital number, since it uses as much as digits as its factorization.

87860936266849 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9029615616, while the sum is 82.

The spelling of 87860936266849 in words is "eighty-seven trillion, eight hundred sixty billion, nine hundred thirty-six million, two hundred sixty-six thousand, eight hundred forty-nine".