8787385081 has 2 divisors, whose sum is σ = 8787385082. Its totient is φ = 8787385080.

The previous prime is 8787385063. The next prime is 8787385093. The reversal of 8787385081 is 1805837878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8787375081 + 10000 = 93741^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 8787385081 - 2⁵ = 8787385049 is a prime.

It is a super-2 number, since 2×8787385081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8787380081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4393692540 + 4393692541.

It is an arithmetic number, because the mean of its divisors is an integer number (4393692541).

Almost surely, 2^8787385081 is an apocalyptic number.

It is an amenable number.

8787385081 is a deficient number, since it is larger than the sum of its proper divisors (1).

8787385081 is an equidigital number, since it uses as much as digits as its factorization.

8787385081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3010560, while the sum is 55.

The square root of 8787385081 is about 93741.0533384387. The cubic root of 8787385081 is about 2063.5732341348.

The spelling of 8787385081 in words is "eight billion, seven hundred eighty-seven million, three hundred eighty-five thousand, eighty-one".