671213433601 has 16 divisors (see below), whose sum is σ = 715524730704. Its totient is φ = 627445960704.

The previous prime is 671213433593. The next prime is 671213433623. The reversal of 671213433601 is 106334312176.

It can be written as a sum of positive squares in 8 ways, for example, as 366121806400 + 305091627201 = 605080^2 + 552351^2 .

It is a cyclic number.

It is not a de Polignac number, because 671213433601 - 2³ = 671213433593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671213413601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2817721 + ... + 3046633.

It is an arithmetic number, because the mean of its divisors is an integer number (44720295669).

Almost surely, 2^671213433601 is an apocalyptic number.

It is an amenable number.

671213433601 is a deficient number, since it is larger than the sum of its proper divisors (44311297103).

671213433601 is a wasteful number, since it uses less digits than its factorization.

671213433601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230100.

The product of its (nonzero) digits is 54432, while the sum is 37.

Adding to 671213433601 its reverse (106334312176), we get a palindrome (777547745777).

The spelling of 671213433601 in words is "six hundred seventy-one billion, two hundred thirteen million, four hundred thirty-three thousand, six hundred one".