671267438007 has 4 divisors (see below), whose sum is σ = 895023250680. Its totient is φ = 447511625336.

The previous prime is 671267438003. The next prime is 671267438033. The reversal of 671267438007 is 700834762176.

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 671267438007 - 2² = 671267438003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671267438003) 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, 111877906332 + ... + 111877906337.

It is an arithmetic number, because the mean of its divisors is an integer number (223755812670).

Almost surely, 2^671267438007 is an apocalyptic number.

671267438007 is a deficient number, since it is larger than the sum of its proper divisors (223755812673).

671267438007 is a wasteful number, since it uses less digits than its factorization.

671267438007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223755812672.

The product of its (nonzero) digits is 2370816, while the sum is 51.

The spelling of 671267438007 in words is "six hundred seventy-one billion, two hundred sixty-seven million, four hundred thirty-eight thousand, seven".