87700870181 has 2 divisors, whose sum is σ = 87700870182. Its totient is φ = 87700870180.

The previous prime is 87700870141. The next prime is 87700870183. The reversal of 87700870181 is 18107800778.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86239719556 + 1461150625 = 293666^2 + 38225^2 .

It is a cyclic number.

It is not a de Polignac number, because 87700870181 - 2¹⁴ = 87700853797 is a prime.

It is a super-2 number, since 2×87700870181² (a number of 23 digits) contains 22 as substring.

Together with 87700870183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87700870183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43850435090 + 43850435091.

It is an arithmetic number, because the mean of its divisors is an integer number (43850435091).

Almost surely, 2^87700870181 is an apocalyptic number.

It is an amenable number.

87700870181 is a deficient number, since it is larger than the sum of its proper divisors (1).

87700870181 is an equidigital number, since it uses as much as digits as its factorization.

87700870181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 175616, while the sum is 47.

The spelling of 87700870181 in words is "eighty-seven billion, seven hundred million, eight hundred seventy thousand, one hundred eighty-one".