671531073236 has 6 divisors (see below), whose sum is σ = 1175179378170. Its totient is φ = 335765536616.

The previous prime is 671531073233. The next prime is 671531073313. The reversal of 671531073236 is 632370135176.

It can be written as a sum of positive squares in only one way, i.e., 660390270736 + 11140802500 = 812644^2 + 105550^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671531073233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83941384151 + ... + 83941384158.

It is an arithmetic number, because the mean of its divisors is an integer number (195863229695).

Almost surely, 2^671531073236 is an apocalyptic number.

It is an amenable number.

671531073236 is a deficient number, since it is larger than the sum of its proper divisors (503648304934).

671531073236 is a wasteful number, since it uses less digits than its factorization.

671531073236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167882768313 (or 167882768311 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 44.

The spelling of 671531073236 in words is "six hundred seventy-one billion, five hundred thirty-one million, seventy-three thousand, two hundred thirty-six".