671736172041 has 96 divisors (see below), whose sum is σ = 1184201036928. Its totient is φ = 375934141440.

The previous prime is 671736172021. The next prime is 671736172043. The reversal of 671736172041 is 140271637176.

671736172041 is a `hidden beast` number, since 6 + 7 + 1 + 7 + 3 + 617 + 20 + 4 + 1 = 666.

It is not a de Polignac number, because 671736172041 - 2⁷ = 671736171913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671736172043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2268915 + ... + 2547831.

It is an arithmetic number, because the mean of its divisors is an integer number (12335427468).

Almost surely, 2^671736172041 is an apocalyptic number.

It is an amenable number.

671736172041 is a deficient number, since it is larger than the sum of its proper divisors (512464864887).

671736172041 is a wasteful number, since it uses less digits than its factorization.

671736172041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279013 (or 279001 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The spelling of 671736172041 in words is "six hundred seventy-one billion, seven hundred thirty-six million, one hundred seventy-two thousand, forty-one".