86634451193 has 2 divisors, whose sum is σ = 86634451194. Its totient is φ = 86634451192.

The previous prime is 86634451147. The next prime is 86634451229. The reversal of 86634451193 is 39115443668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44263110544 + 42371340649 = 210388^2 + 205843^2 .

It is a cyclic number.

It is not a de Polignac number, because 86634451193 - 2⁶ = 86634451129 is a prime.

It is not a weakly prime, because it can be changed into another prime (86634453193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43317225596 + 43317225597.

It is an arithmetic number, because the mean of its divisors is an integer number (43317225597).

Almost surely, 2^86634451193 is an apocalyptic number.

It is an amenable number.

86634451193 is a deficient number, since it is larger than the sum of its proper divisors (1).

86634451193 is an equidigital number, since it uses as much as digits as its factorization.

86634451193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 50.

The spelling of 86634451193 in words is "eighty-six billion, six hundred thirty-four million, four hundred fifty-one thousand, one hundred ninety-three".