671548864832 has 28 divisors (see below), whose sum is σ = 1378556671380. Its totient is φ = 324196002816.

The previous prime is 671548864769. The next prime is 671548864837. The reversal of 671548864832 is 238468845176.

671548864832 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 546617720896 + 124931143936 = 739336^2 + 353456^2 .

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671548864837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180911093 + ... + 180914804.

It is an arithmetic number, because the mean of its divisors is an integer number (49234166835).

Almost surely, 2^671548864832 is an apocalyptic number.

It is an amenable number.

671548864832 is an abundant number, since it is smaller than the sum of its proper divisors (707007806548).

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

671548864832 is a wasteful number, since it uses less digits than its factorization.

671548864832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361825938 (or 361825928 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 62.

The spelling of 671548864832 in words is "six hundred seventy-one billion, five hundred forty-eight million, eight hundred sixty-four thousand, eight hundred thirty-two".