671276557365 has 32 divisors (see below), whose sum is σ = 1097292251136. Its totient is φ = 350335022400.

The previous prime is 671276557349. The next prime is 671276557397. The reversal of 671276557365 is 563755672176.

It is not a de Polignac number, because 671276557365 - 2⁴ = 671276557349 is a prime.

It is a super-2 number, since 2×671276557365² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 671276557299 and 671276557308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2059957 + ... + 2363466.

It is an arithmetic number, because the mean of its divisors is an integer number (34290382848).

Almost surely, 2^671276557365 is an apocalyptic number.

It is an amenable number.

671276557365 is a deficient number, since it is larger than the sum of its proper divisors (426015693771).

671276557365 is a wasteful number, since it uses less digits than its factorization.

671276557365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4423649.

The product of its digits is 55566000, while the sum is 60.

The spelling of 671276557365 in words is "six hundred seventy-one billion, two hundred seventy-six million, five hundred fifty-seven thousand, three hundred sixty-five".