6445688132577 has 4 divisors (see below), whose sum is σ = 8594250843440. Its totient is φ = 4297125421716.

The previous prime is 6445688132563. The next prime is 6445688132603. The reversal of 6445688132577 is 7752318865446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6445688132577 - 2³² = 6441393165281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6445688132537) 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, 1074281355427 + ... + 1074281355432.

It is an arithmetic number, because the mean of its divisors is an integer number (2148562710860).

Almost surely, 2^{6445688132577} is an apocalyptic number.

It is an amenable number.

6445688132577 is a deficient number, since it is larger than the sum of its proper divisors (2148562710863).

6445688132577 is a wasteful number, since it uses less digits than its factorization.

6445688132577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148562710862.

The product of its digits is 270950400, while the sum is 66.

The spelling of 6445688132577 in words is "six trillion, four hundred forty-five billion, six hundred eighty-eight million, one hundred thirty-two thousand, five hundred seventy-seven".