2638888888879 has 2 divisors, whose sum is σ = 2638888888880. Its totient is φ = 2638888888878.

The previous prime is 2638888888843. The next prime is 2638888888897. The reversal of 2638888888879 is 9788888888362.

Together with next prime (2638888888897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2638888888879 - 2¹³ = 2638888880687 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2638888888793 and 2638888888802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2638888888579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319444444439 + 1319444444440.

It is an arithmetic number, because the mean of its divisors is an integer number (1319444444440).

Almost surely, 2^{2638888888879} is an apocalyptic number.

2638888888879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2638888888879 is an equidigital number, since it uses as much as digits as its factorization.

2638888888879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38050725888, while the sum is 91.

The spelling of 2638888888879 in words is "two trillion, six hundred thirty-eight billion, eight hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred seventy-nine".