675861479991 has 48 divisors (see below), whose sum is σ = 1006446355200. Its totient is φ = 436797446400.

The previous prime is 675861479977. The next prime is 675861480011. The reversal of 675861479991 is 199974168576.

675861479991 is a `hidden beast` number, since 6 + 7 + 5 + 8 + 61 + 479 + 9 + 91 = 666.

It is not a de Polignac number, because 675861479991 - 2¹⁸ = 675861217847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (675861479911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76372735 + ... + 76381583.

It is an arithmetic number, because the mean of its divisors is an integer number (20967632400).

Almost surely, 2^675861479991 is an apocalyptic number.

675861479991 is a deficient number, since it is larger than the sum of its proper divisors (330584875209).

675861479991 is a wasteful number, since it uses less digits than its factorization.

675861479991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10356 (or 10353 counting only the distinct ones).

The product of its digits is 205752960, while the sum is 72.

The spelling of 675861479991 in words is "six hundred seventy-five billion, eight hundred sixty-one million, four hundred seventy-nine thousand, nine hundred ninety-one".