6238111633491 has 4 divisors (see below), whose sum is σ = 8317482177992. Its totient is φ = 4158741088992.

The previous prime is 6238111633489. The next prime is 6238111633513. The reversal of 6238111633491 is 1943361118326.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 6238111633491 - 2¹ = 6238111633489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6238111633491.

It is not an unprimeable number, because it can be changed into a prime (6238111633441) 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, 1039685272246 + ... + 1039685272251.

It is an arithmetic number, because the mean of its divisors is an integer number (2079370544498).

Almost surely, 2^{6238111633491} is an apocalyptic number.

6238111633491 is a deficient number, since it is larger than the sum of its proper divisors (2079370544501).

6238111633491 is a wasteful number, since it uses less digits than its factorization.

6238111633491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079370544500.

The product of its digits is 559872, while the sum is 48.

The spelling of 6238111633491 in words is "six trillion, two hundred thirty-eight billion, one hundred eleven million, six hundred thirty-three thousand, four hundred ninety-one".