87421744211 has 2 divisors, whose sum is σ = 87421744212. Its totient is φ = 87421744210.

The previous prime is 87421744181. The next prime is 87421744213. The reversal of 87421744211 is 11244712478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87421744211 - 2¹⁰ = 87421743187 is a prime.

It is a super-2 number, since 2×87421744211² (a number of 23 digits) contains 22 as substring.

Together with 87421744213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87421744213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43710872105 + 43710872106.

It is an arithmetic number, because the mean of its divisors is an integer number (43710872106).

Almost surely, 2^87421744211 is an apocalyptic number.

87421744211 is a deficient number, since it is larger than the sum of its proper divisors (1).

87421744211 is an equidigital number, since it uses as much as digits as its factorization.

87421744211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100352, while the sum is 41.

The spelling of 87421744211 in words is "eighty-seven billion, four hundred twenty-one million, seven hundred forty-four thousand, two hundred eleven".