671557282617 has 16 divisors (see below), whose sum is σ = 964570602240. Its totient is φ = 413144639232.

The previous prime is 671557282577. The next prime is 671557282631. The reversal of 671557282617 is 716282755176.

It is not a de Polignac number, because 671557282617 - 2²⁴ = 671540505401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671557282657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2394192 + ... + 2659937.

It is an arithmetic number, because the mean of its divisors is an integer number (60285662640).

Almost surely, 2^671557282617 is an apocalyptic number.

It is an amenable number.

671557282617 is a deficient number, since it is larger than the sum of its proper divisors (293013319623).

671557282617 is a wasteful number, since it uses less digits than its factorization.

671557282617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5057552.

The product of its digits is 9878400, while the sum is 57.

The spelling of 671557282617 in words is "six hundred seventy-one billion, five hundred fifty-seven million, two hundred eighty-two thousand, six hundred seventeen".