671573901960 has 1024 divisors, whose sum is σ = 2622799872000. Its totient is φ = 151434178560.

The previous prime is 671573901883. The next prime is 671573901961. The reversal of 671573901960 is 69109375176.

It is a happy number.

671573901960 is a `hidden beast` number, since 6 + 7 + 1 + 573 + 9 + 0 + 1 + 9 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 671573901897 and 671573901906.

It is not an unprimeable number, because it can be changed into a prime (671573901961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 1456776130 + ... + 1456776590.

It is an arithmetic number, because the mean of its divisors is an integer number (2561328000).

Almost surely, 2^671573901960 is an apocalyptic number.

671573901960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671573901960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1311399936000).

671573901960 is an abundant number, since it is smaller than the sum of its proper divisors (1951225970040).

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

671573901960 is a wasteful number, since it uses less digits than its factorization.

671573901960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683 (or 673 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 54.

The spelling of 671573901960 in words is "six hundred seventy-one billion, five hundred seventy-three million, nine hundred one thousand, nine hundred sixty".