671873808837 has 32 divisors (see below), whose sum is σ = 1121002573824. Its totient is φ = 347737406400.

The previous prime is 671873808811. The next prime is 671873808839. The reversal of 671873808837 is 738808378176.

It is not a de Polignac number, because 671873808837 - 2¹² = 671873804741 is a prime.

It is a super-2 number, since 2×671873808837² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671873808839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5303718 + ... + 5428919.

It is an arithmetic number, because the mean of its divisors is an integer number (35031330432).

Almost surely, 2^671873808837 is an apocalyptic number.

It is an amenable number.

671873808837 is a deficient number, since it is larger than the sum of its proper divisors (449128764987).

671873808837 is a wasteful number, since it uses less digits than its factorization.

671873808837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10732929.

The product of its (nonzero) digits is 75866112, while the sum is 66.

The spelling of 671873808837 in words is "six hundred seventy-one billion, eight hundred seventy-three million, eight hundred eight thousand, eight hundred thirty-seven".