87337728281 has 2 divisors, whose sum is σ = 87337728282. Its totient is φ = 87337728280.

The previous prime is 87337728253. The next prime is 87337728319. The reversal of 87337728281 is 18282773378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84399546256 + 2938182025 = 290516^2 + 54205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87337728281 is a prime.

It is a super-2 number, since 2×87337728281² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (87337728481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43668864140 + 43668864141.

It is an arithmetic number, because the mean of its divisors is an integer number (43668864141).

Almost surely, 2^87337728281 is an apocalyptic number.

It is an amenable number.

87337728281 is a deficient number, since it is larger than the sum of its proper divisors (1).

87337728281 is an equidigital number, since it uses as much as digits as its factorization.

87337728281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6322176, while the sum is 56.

The spelling of 87337728281 in words is "eighty-seven billion, three hundred thirty-seven million, seven hundred twenty-eight thousand, two hundred eighty-one".