671736579048 has 288 divisors, whose sum is σ = 2001290428800. Its totient is φ = 202960816128.

The previous prime is 671736579013. The next prime is 671736579061. The reversal of 671736579048 is 840975637176.

671736579048 is a `hidden beast` number, since 6 + 7 + 17 + 3 + 6 + 579 + 0 + 48 = 666.

It is a super-2 number, since 2×671736579048² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 130002561 + ... + 130007727.

It is an arithmetic number, because the mean of its divisors is an integer number (6948925100).

Almost surely, 2^671736579048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671736579048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000645214400).

671736579048 is an abundant number, since it is smaller than the sum of its proper divisors (1329553849752).

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

671736579048 is a wasteful number, since it uses less digits than its factorization.

671736579048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5369 (or 5333 counting only the distinct ones).

The product of its (nonzero) digits is 53343360, while the sum is 63.

The spelling of 671736579048 in words is "six hundred seventy-one billion, seven hundred thirty-six million, five hundred seventy-nine thousand, forty-eight".