671155501263660 has 288 divisors, whose sum is σ = 2344836993408000. Its totient is φ = 152211547768320.

The previous prime is 671155501263649. The next prime is 671155501263677. The reversal of 671155501263660 is 66362105551176.

671155501263660 is a `hidden beast` number, since 6 + 7 + 1 + 1 + 5 + 550 + 1 + 26 + 3 + 6 + 60 = 666.

671155501263660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 671155501263597 and 671155501263606.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 170588055 + ... + 174478065.

It is an arithmetic number, because the mean of its divisors is an integer number (8141795116000).

Almost surely, 2^{671155501263660} is an apocalyptic number.

671155501263660 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 671155501263660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1172418496704000).

671155501263660 is an abundant number, since it is smaller than the sum of its proper divisors (1673681492144340).

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

671155501263660 is a wasteful number, since it uses less digits than its factorization.

671155501263660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891101 (or 3891096 counting only the distinct ones).

The product of its (nonzero) digits is 6804000, while the sum is 54.

The spelling of 671155501263660 in words is "six hundred seventy-one trillion, one hundred fifty-five billion, five hundred one million, two hundred sixty-three thousand, six hundred sixty".