671038238378 has 16 divisors (see below), whose sum is σ = 1013306807304. Its totient is φ = 333274824960.

The previous prime is 671038238327. The next prime is 671038238393. The reversal of 671038238378 is 873832830176.

It can be written as a sum of positive squares in 4 ways, for example, as 670536612769 + 501625609 = 818863^2 + 22397^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137083 + ... + 1623278.

Almost surely, 2^671038238378 is an apocalyptic number.

671038238378 is a deficient number, since it is larger than the sum of its proper divisors (342268568926).

671038238378 is a wasteful number, since it uses less digits than its factorization.

671038238378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761177.

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 671038238378 in words is "six hundred seventy-one billion, thirty-eight million, two hundred thirty-eight thousand, three hundred seventy-eight".