6557153543503 has 2 divisors, whose sum is σ = 6557153543504. Its totient is φ = 6557153543502.

The previous prime is 6557153543497. The next prime is 6557153543561. The reversal of 6557153543503 is 3053453517556.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6557153543503 is a prime.

It is a super-2 number, since 2×6557153543503² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6557153543203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3278576771751 + 3278576771752.

It is an arithmetic number, because the mean of its divisors is an integer number (3278576771752).

Almost surely, 2^{6557153543503} is an apocalyptic number.

6557153543503 is a deficient number, since it is larger than the sum of its proper divisors (1).

6557153543503 is an equidigital number, since it uses as much as digits as its factorization.

6557153543503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14175000, while the sum is 52.

The spelling of 6557153543503 in words is "six trillion, five hundred fifty-seven billion, one hundred fifty-three million, five hundred forty-three thousand, five hundred three".