6538998355 has 16 divisors (see below), whose sum is σ = 7957245600. Its totient is φ = 5158081792.

The previous prime is 6538998317. The next prime is 6538998359. The reversal of 6538998355 is 5538998356.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6538998355 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6538998293 and 6538998302.

It is not an unprimeable number, because it can be changed into a prime (6538998359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70032 + ... + 134098.

It is an arithmetic number, because the mean of its divisors is an integer number (497327850).

Almost surely, 2^6538998355 is an apocalyptic number.

6538998355 is a deficient number, since it is larger than the sum of its proper divisors (1418247245).

6538998355 is a wasteful number, since it uses less digits than its factorization.

6538998355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64358.

The product of its digits is 34992000, while the sum is 61.

The square root of 6538998355 is about 80864.0733267871. The cubic root of 6538998355 is about 1869.9804925186.

Subtracting from 6538998355 its reverse (5538998356), we obtain a palindrome (999999999).

The spelling of 6538998355 in words is "six billion, five hundred thirty-eight million, nine hundred ninety-eight thousand, three hundred fifty-five".