671731577427 has 8 divisors (see below), whose sum is σ = 897481206016. Its totient is φ = 446901500232.

The previous prime is 671731577359. The next prime is 671731577437. The reversal of 671731577427 is 724775137176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 671731577427 - 2¹⁹ = 671731053139 is a prime.

It is a super-2 number, since 2×671731577427² (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 (671731577437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229886143 + ... + 229889064.

It is an arithmetic number, because the mean of its divisors is an integer number (112185150752).

Almost surely, 2^671731577427 is an apocalyptic number.

671731577427 is a deficient number, since it is larger than the sum of its proper divisors (225749628589).

671731577427 is a wasteful number, since it uses less digits than its factorization.

671731577427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459775697.

The product of its digits is 12101040, while the sum is 57.

The spelling of 671731577427 in words is "six hundred seventy-one billion, seven hundred thirty-one million, five hundred seventy-seven thousand, four hundred twenty-seven".