6647825706499 has 4 divisors (see below), whose sum is σ = 6649424129920. Its totient is φ = 6646227283080.

The previous prime is 6647825706493. The next prime is 6647825706503. The reversal of 6647825706499 is 9946075287466.

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 6647825706499 - 2³⁷ = 6510386753027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6647825706493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799205472 + ... + 799213789.

It is an arithmetic number, because the mean of its divisors is an integer number (1662356032480).

Almost surely, 2^{6647825706499} is an apocalyptic number.

6647825706499 is a deficient number, since it is larger than the sum of its proper divisors (1598423421).

6647825706499 is a wasteful number, since it uses less digits than its factorization.

6647825706499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598423420.

The product of its (nonzero) digits is 1097349120, while the sum is 73.

The spelling of 6647825706499 in words is "six trillion, six hundred forty-seven billion, eight hundred twenty-five million, seven hundred six thousand, four hundred ninety-nine".