671111640858 has 32 divisors (see below), whose sum is σ = 1365528225600. Its totient is φ = 219826719360.

The previous prime is 671111640847. The next prime is 671111640893. The reversal of 671111640858 is 858046111176.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490060 + ... + 1257927.

It is an arithmetic number, because the mean of its divisors is an integer number (42672757050).

Almost surely, 2^671111640858 is an apocalyptic number.

671111640858 is an abundant number, since it is smaller than the sum of its proper divisors (694416584742).

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

671111640858 is a wasteful number, since it uses less digits than its factorization.

671111640858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749102.

The product of its (nonzero) digits is 322560, while the sum is 48.

The spelling of 671111640858 in words is "six hundred seventy-one billion, one hundred eleven million, six hundred forty thousand, eight hundred fifty-eight".