6531350531357 has 4 divisors (see below), whose sum is σ = 6531355986876. Its totient is φ = 6531345075840.

The previous prime is 6531350531353. The next prime is 6531350531471. The reversal of 6531350531357 is 7531350531356.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1609191194521 + 4922159336836 = 1268539^2 + 2218594^2 .

It is a cyclic number.

It is not a de Polignac number, because 6531350531357 - 2² = 6531350531353 is a prime.

It is a super-2 number, since 2×6531350531357² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6531350531353) 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, 66494 + ... + 3614847.

It is an arithmetic number, because the mean of its divisors is an integer number (1632838996719).

Almost surely, 2^{6531350531357} is an apocalyptic number.

It is an amenable number.

6531350531357 is a deficient number, since it is larger than the sum of its proper divisors (5455519).

6531350531357 is a wasteful number, since it uses less digits than its factorization.

6531350531357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455518.

The product of its (nonzero) digits is 2126250, while the sum is 47.

Subtracting 6531350531357 from its reverse (7531350531356), we obtain a palindrome (999999999999).

The spelling of 6531350531357 in words is "six trillion, five hundred thirty-one billion, three hundred fifty million, five hundred thirty-one thousand, three hundred fifty-seven".