2638912764129 has 4 divisors (see below), whose sum is σ = 3518550352176. Its totient is φ = 1759275176084.

The previous prime is 2638912764077. The next prime is 2638912764197. The reversal of 2638912764129 is 9214672198362.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2638912764129 - 2²⁰ = 2638911715553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2638912764529) 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, 439818794019 + ... + 439818794024.

It is an arithmetic number, because the mean of its divisors is an integer number (879637588044).

Almost surely, 2^{2638912764129} is an apocalyptic number.

It is an amenable number.

2638912764129 is a deficient number, since it is larger than the sum of its proper divisors (879637588047).

2638912764129 is an equidigital number, since it uses as much as digits as its factorization.

2638912764129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879637588046.

The product of its digits is 15676416, while the sum is 60.

The spelling of 2638912764129 in words is "two trillion, six hundred thirty-eight billion, nine hundred twelve million, seven hundred sixty-four thousand, one hundred twenty-nine".