6810383553557 has 4 divisors (see below), whose sum is σ = 6836883100716. Its totient is φ = 6783884006400.

The previous prime is 6810383553551. The next prime is 6810383553583. The reversal of 6810383553557 is 7553553830186.

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 4097086063876 + 2713297489681 = 2024126^2 + 1647209^2 .

It is a cyclic number.

It is not a de Polignac number, because 6810383553557 - 2²⁶ = 6810316444693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6810383553496 and 6810383553505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6810383553551) 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, 13249773194 + ... + 13249773707.

It is an arithmetic number, because the mean of its divisors is an integer number (1709220775179).

Almost surely, 2^{6810383553557} is an apocalyptic number.

It is an amenable number.

6810383553557 is a deficient number, since it is larger than the sum of its proper divisors (26499547159).

6810383553557 is a wasteful number, since it uses less digits than its factorization.

6810383553557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26499547158.

The product of its (nonzero) digits is 45360000, while the sum is 59.

The spelling of 6810383553557 in words is "six trillion, eight hundred ten billion, three hundred eighty-three million, five hundred fifty-three thousand, five hundred fifty-seven".