6538491201099 has 64 divisors (see below), whose sum is σ = 10596225507840. Its totient is φ = 3531450424320.

The previous prime is 6538491201097. The next prime is 6538491201101. The reversal of 6538491201099 is 9901021948356.

It is an interprime number because it is at equal distance from previous prime (6538491201097) and next prime (6538491201101).

It is not a de Polignac number, because 6538491201099 - 2¹ = 6538491201097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6538491201097) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 241553364 + ... + 241580430.

It is an arithmetic number, because the mean of its divisors is an integer number (165566023560).

Almost surely, 2^{6538491201099} is an apocalyptic number.

6538491201099 is a deficient number, since it is larger than the sum of its proper divisors (4057734306741).

6538491201099 is a wasteful number, since it uses less digits than its factorization.

6538491201099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46540.

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 6538491201099 in words is "six trillion, five hundred thirty-eight billion, four hundred ninety-one million, two hundred one thousand, ninety-nine".