861872633419211 has 2 divisors, whose sum is σ = 861872633419212. Its totient is φ = 861872633419210.

The previous prime is 861872633419181. The next prime is 861872633419241. The reversal of 861872633419211 is 112914336278168.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (861872633419181) and next prime (861872633419241).

It is a cyclic number.

It is not a de Polignac number, because 861872633419211 - 2³⁴ = 861855453550027 is a prime.

It is not a weakly prime, because it can be changed into another prime (861872633419241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430936316709605 + 430936316709606.

It is an arithmetic number, because the mean of its divisors is an integer number (430936316709606).

Almost surely, 2^{861872633419211} is an apocalyptic number.

861872633419211 is a deficient number, since it is larger than the sum of its proper divisors (1).

861872633419211 is an equidigital number, since it uses as much as digits as its factorization.

861872633419211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20901888, while the sum is 62.

The spelling of 861872633419211 in words is "eight hundred sixty-one trillion, eight hundred seventy-two billion, six hundred thirty-three million, four hundred nineteen thousand, two hundred eleven".