871421440186 has 16 divisors (see below), whose sum is σ = 1425982595328. Its totient is φ = 396095032800.

The previous prime is 871421440177. The next prime is 871421440217. The reversal of 871421440186 is 681044124178.

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, 1577206 + ... + 2056798.

It is an arithmetic number, because the mean of its divisors is an integer number (89123912208).

Almost surely, 2^871421440186 is an apocalyptic number.

871421440186 is a deficient number, since it is larger than the sum of its proper divisors (554561155142).

871421440186 is a wasteful number, since it uses less digits than its factorization.

871421440186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562197.

The product of its (nonzero) digits is 344064, while the sum is 46.

The spelling of 871421440186 in words is "eight hundred seventy-one billion, four hundred twenty-one million, four hundred forty thousand, one hundred eighty-six".