677126832491 has 4 divisors (see below), whose sum is σ = 677480795112. Its totient is φ = 676772869872.

The previous prime is 677126832469. The next prime is 677126832493. The reversal of 677126832491 is 194238621776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 677126832491 - 2⁶ = 677126832427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677126832493) 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 3 ways as a sum of consecutive naturals, for example, 176978441 + ... + 176982266.

It is an arithmetic number, because the mean of its divisors is an integer number (169370198778).

Almost surely, 2^677126832491 is an apocalyptic number.

677126832491 is a deficient number, since it is larger than the sum of its proper divisors (353962621).

677126832491 is a wasteful number, since it uses less digits than its factorization.

677126832491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353962620.

The product of its digits is 6096384, while the sum is 56.

The spelling of 677126832491 in words is "six hundred seventy-seven billion, one hundred twenty-six million, eight hundred thirty-two thousand, four hundred ninety-one".