671043401161 has 12 divisors (see below), whose sum is σ = 780621556368. Its totient is φ = 575165285352.

The previous prime is 671043401159. The next prime is 671043401179. The reversal of 671043401161 is 161104340176.

It is not a de Polignac number, because 671043401161 - 2¹ = 671043401159 is a prime.

It is a super-2 number, since 2×671043401161² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671043701161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2031190 + ... + 2338336.

It is an arithmetic number, because the mean of its divisors is an integer number (65051796364).

Almost surely, 2^671043401161 is an apocalyptic number.

It is an amenable number.

671043401161 is a deficient number, since it is larger than the sum of its proper divisors (109578155207).

671043401161 is a wasteful number, since it uses less digits than its factorization.

671043401161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351748 (or 351741 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 671043401161 in words is "six hundred seventy-one billion, forty-three million, four hundred one thousand, one hundred sixty-one".