671275615505220 has 144 divisors (see below), whose sum is σ = 2224745289906048. Its totient is φ = 162481962170880.

The previous prime is 671275615505203. The next prime is 671275615505239. The reversal of 671275615505220 is 22505516572176.

671275615505220 is a `hidden beast` number, since 6 + 7 + 1 + 2 + 7 + 5 + 61 + 5 + 50 + 522 + 0 = 666.

It is a super-2 number, since 2×671275615505220² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 260719009 + ... + 263281128.

It is an arithmetic number, because the mean of its divisors is an integer number (15449620068792).

Almost surely, 2^{671275615505220} is an apocalyptic number.

671275615505220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

671275615505220 is an abundant number, since it is smaller than the sum of its proper divisors (1553469674400828).

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

671275615505220 is a wasteful number, since it uses less digits than its factorization.

671275615505220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524000810 (or 524000805 counting only the distinct ones).

The product of its (nonzero) digits is 8820000, while the sum is 54.

The spelling of 671275615505220 in words is "six hundred seventy-one trillion, two hundred seventy-five billion, six hundred fifteen million, five hundred five thousand, two hundred twenty".