671128873740 has 72 divisors (see below), whose sum is σ = 2192354328528. Its totient is φ = 165200952960.

The previous prime is 671128873729. The next prime is 671128873747. The reversal of 671128873740 is 47378821176.

671128873740 is a `hidden beast` number, since 6 + 71 + 128 + 87 + 374 + 0 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (671128873747) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143401266 + ... + 143405945.

It is an arithmetic number, because the mean of its divisors is an integer number (30449365674).

Almost surely, 2^671128873740 is an apocalyptic number.

671128873740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

671128873740 is an abundant number, since it is smaller than the sum of its proper divisors (1521225454788).

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

671128873740 is a wasteful number, since it uses less digits than its factorization.

671128873740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286807239 (or 286807234 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 671128873740 in words is "six hundred seventy-one billion, one hundred twenty-eight million, eight hundred seventy-three thousand, seven hundred forty".