2638905091199 has 16 divisors (see below), whose sum is σ = 3012499562688. Its totient is φ = 2290009093632.

The previous prime is 2638905091157. The next prime is 2638905091213. The reversal of 2638905091199 is 9911905098362.

It is a happy number.

It is not a de Polignac number, because 2638905091199 - 2²⁰ = 2638904042623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638905096199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6613907 + ... + 7001540.

It is an arithmetic number, because the mean of its divisors is an integer number (188281222668).

Almost surely, 2^{2638905091199} is an apocalyptic number.

2638905091199 is a deficient number, since it is larger than the sum of its proper divisors (373594471489).

2638905091199 is a wasteful number, since it uses less digits than its factorization.

2638905091199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13616354.

The product of its (nonzero) digits is 9447840, while the sum is 62.

The spelling of 2638905091199 in words is "two trillion, six hundred thirty-eight billion, nine hundred five million, ninety-one thousand, one hundred ninety-nine".