87827165737 has 2 divisors, whose sum is σ = 87827165738. Its totient is φ = 87827165736.

The previous prime is 87827165719. The next prime is 87827165779. The reversal of 87827165737 is 73756172878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72780708841 + 15046456896 = 269779^2 + 122664^2 .

It is a cyclic number.

It is not a de Polignac number, because 87827165737 - 2¹¹ = 87827163689 is a prime.

It is a super-2 number, since 2×87827165737² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87827165837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43913582868 + 43913582869.

It is an arithmetic number, because the mean of its divisors is an integer number (43913582869).

Almost surely, 2^87827165737 is an apocalyptic number.

It is an amenable number.

87827165737 is a deficient number, since it is larger than the sum of its proper divisors (1).

87827165737 is an equidigital number, since it uses as much as digits as its factorization.

87827165737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27659520, while the sum is 61.

The spelling of 87827165737 in words is "eighty-seven billion, eight hundred twenty-seven million, one hundred sixty-five thousand, seven hundred thirty-seven".