671082881142 has 32 divisors (see below), whose sum is σ = 1378942473312. Its totient is φ = 217569245184.

The previous prime is 671082881137. The next prime is 671082881143. The reversal of 671082881142 is 241188280176.

It is a junction number, because it is equal to n+sod(n) for n = 671082881091 and 671082881100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671082881143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62148 + ... + 1160184.

It is an arithmetic number, because the mean of its divisors is an integer number (43091952291).

Almost surely, 2^671082881142 is an apocalyptic number.

671082881142 is an abundant number, since it is smaller than the sum of its proper divisors (707859592170).

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

671082881142 is a wasteful number, since it uses less digits than its factorization.

671082881142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100832.

The product of its (nonzero) digits is 344064, while the sum is 48.

The spelling of 671082881142 in words is "six hundred seventy-one billion, eighty-two million, eight hundred eighty-one thousand, one hundred forty-two".