671074231956 has 24 divisors (see below), whose sum is σ = 1599155617920. Its totient is φ = 218932018752.

The previous prime is 671074231903. The next prime is 671074231973. The reversal of 671074231956 is 659132470176.

It is a junction number, because it is equal to n+sod(n) for n = 671074231899 and 671074231908.

It is a congruent 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, 594923401 + ... + 594924528.

It is an arithmetic number, because the mean of its divisors is an integer number (66631484080).

Almost surely, 2^671074231956 is an apocalyptic number.

It is an amenable number.

671074231956 is an abundant number, since it is smaller than the sum of its proper divisors (928081385964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671074231956 is a wasteful number, since it uses less digits than its factorization.

671074231956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189847983 (or 1189847981 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 671074231956 in words is "six hundred seventy-one billion, seventy-four million, two hundred thirty-one thousand, nine hundred fifty-six".