671425910267 has 4 divisors (see below), whose sum is σ = 767343897456. Its totient is φ = 575507923080.

The previous prime is 671425910213. The next prime is 671425910339. The reversal of 671425910267 is 762019524176.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 671425910267 - 2¹² = 671425906171 is a prime.

It is a super-2 number, since 2×671425910267² (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 (671425910567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47958993584 + ... + 47958993597.

It is an arithmetic number, because the mean of its divisors is an integer number (191835974364).

Almost surely, 2^671425910267 is an apocalyptic number.

671425910267 is a deficient number, since it is larger than the sum of its proper divisors (95917987189).

671425910267 is an equidigital number, since it uses as much as digits as its factorization.

671425910267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95917987188.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 671425910267 in words is "six hundred seventy-one billion, four hundred twenty-five million, nine hundred ten thousand, two hundred sixty-seven".