864733677821171 has 2 divisors, whose sum is σ = 864733677821172. Its totient is φ = 864733677821170.

The previous prime is 864733677821141. The next prime is 864733677821197. The reversal of 864733677821171 is 171128776337468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 864733677821171 - 2¹⁰ = 864733677820147 is a prime.

It is a super-2 number, since 2×864733677821171² (a number of 31 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 864733677821095 and 864733677821104.

It is not a weakly prime, because it can be changed into another prime (864733677821141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432366838910585 + 432366838910586.

It is an arithmetic number, because the mean of its divisors is an integer number (432366838910586).

Almost surely, 2^{864733677821171} is an apocalyptic number.

864733677821171 is a deficient number, since it is larger than the sum of its proper divisors (1).

864733677821171 is an equidigital number, since it uses as much as digits as its factorization.

864733677821171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 398297088, while the sum is 71.

The spelling of 864733677821171 in words is "eight hundred sixty-four trillion, seven hundred thirty-three billion, six hundred seventy-seven million, eight hundred twenty-one thousand, one hundred seventy-one".