6451716807133 has 4 divisors (see below), whose sum is σ = 6948002715388. Its totient is φ = 5955430898880.

The previous prime is 6451716807049. The next prime is 6451716807143. The reversal of 6451716807133 is 3317086171546.

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

It can be written as a sum of positive squares in 2 ways, for example, as 512372503204 + 5939344303929 = 715802^2 + 2437077^2 .

It is a cyclic number.

It is not a de Polignac number, because 6451716807133 - 2⁹ = 6451716806621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6451716807143) 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, 248142954108 + ... + 248142954133.

It is an arithmetic number, because the mean of its divisors is an integer number (1737000678847).

Almost surely, 2^{6451716807133} is an apocalyptic number.

It is an amenable number.

6451716807133 is a deficient number, since it is larger than the sum of its proper divisors (496285908255).

6451716807133 is a wasteful number, since it uses less digits than its factorization.

6451716807133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496285908254.

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 6451716807133 in words is "six trillion, four hundred fifty-one billion, seven hundred sixteen million, eight hundred seven thousand, one hundred thirty-three".