671044371011 has 4 divisors (see below), whose sum is σ = 766907852592. Its totient is φ = 575180889432.

The previous prime is 671044370989. The next prime is 671044371017. The reversal of 671044371011 is 110173440176.

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 671044371011 - 2³⁴ = 653864501827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671044371017) 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, 47931740780 + ... + 47931740793.

It is an arithmetic number, because the mean of its divisors is an integer number (191726963148).

Almost surely, 2^671044371011 is an apocalyptic number.

671044371011 is a deficient number, since it is larger than the sum of its proper divisors (95863481581).

671044371011 is an equidigital number, since it uses as much as digits as its factorization.

671044371011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95863481580.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 671044371011 in words is "six hundred seventy-one billion, forty-four million, three hundred seventy-one thousand, eleven".