671136431726 has 12 divisors (see below), whose sum is σ = 1026057468912. Its totient is φ = 329236737336.

The previous prime is 671136431657. The next prime is 671136431731. The reversal of 671136431726 is 627134631176.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59725286 + ... + 59736521.

It is an arithmetic number, because the mean of its divisors is an integer number (85504789076).

Almost surely, 2^671136431726 is an apocalyptic number.

671136431726 is a deficient number, since it is larger than the sum of its proper divisors (354921037186).

671136431726 is a wasteful number, since it uses less digits than its factorization.

671136431726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119461915 (or 119461862 counting only the distinct ones).

The product of its digits is 762048, while the sum is 47.

The spelling of 671136431726 in words is "six hundred seventy-one billion, one hundred thirty-six million, four hundred thirty-one thousand, seven hundred twenty-six".