671803778110 has 8 divisors (see below), whose sum is σ = 1209246800616. Its totient is φ = 268721511240.

The previous prime is 671803778071. The next prime is 671803778141. The reversal of 671803778110 is 11877308176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33590188896 + ... + 33590188915.

It is an arithmetic number, because the mean of its divisors is an integer number (151155850077).

Almost surely, 2^671803778110 is an apocalyptic number.

671803778110 is a deficient number, since it is larger than the sum of its proper divisors (537443022506).

671803778110 is a wasteful number, since it uses less digits than its factorization.

671803778110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67180377818.

The product of its (nonzero) digits is 395136, while the sum is 49.

The spelling of 671803778110 in words is "six hundred seventy-one billion, eight hundred three million, seven hundred seventy-eight thousand, one hundred ten".