671601108773 has 12 divisors (see below), whose sum is σ = 784030535532. Its totient is φ = 573609476160.

The previous prime is 671601108743. The next prime is 671601108779. The reversal of 671601108773 is 377801106176.

It can be written as a sum of positive squares in 2 ways, for example, as 586513968964 + 85087139809 = 765842^2 + 291697^2 .

It is a de Polignac number, because none of the positive numbers 2^k-671601108773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671601108779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24374390 + ... + 24401927.

It is an arithmetic number, because the mean of its divisors is an integer number (65335877961).

Almost surely, 2^671601108773 is an apocalyptic number.

It is an amenable number.

671601108773 is a deficient number, since it is larger than the sum of its proper divisors (112429426759).

671601108773 is a wasteful number, since it uses less digits than its factorization.

671601108773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48776612 (or 48776605 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 47.

The spelling of 671601108773 in words is "six hundred seventy-one billion, six hundred one million, one hundred eight thousand, seven hundred seventy-three".