671647103111 has 2 divisors, whose sum is σ = 671647103112. Its totient is φ = 671647103110.

The previous prime is 671647103093. The next prime is 671647103291. The reversal of 671647103111 is 111301746176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671647103111 - 2²⁶ = 671579994247 is a prime.

It is a super-2 number, since 2×671647103111² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671617103111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335823551555 + 335823551556.

It is an arithmetic number, because the mean of its divisors is an integer number (335823551556).

Almost surely, 2^671647103111 is an apocalyptic number.

671647103111 is a deficient number, since it is larger than the sum of its proper divisors (1).

671647103111 is an equidigital number, since it uses as much as digits as its factorization.

671647103111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

Adding to 671647103111 its reverse (111301746176), we get a palindrome (782948849287).

The spelling of 671647103111 in words is "six hundred seventy-one billion, six hundred forty-seven million, one hundred three thousand, one hundred eleven".