2578238809067 has 2 divisors, whose sum is σ = 2578238809068. Its totient is φ = 2578238809066.

The previous prime is 2578238809039. The next prime is 2578238809129. The reversal of 2578238809067 is 7609088328752.

2578238809067 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2578238809067 - 2¹⁰ = 2578238808043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2578238808994 and 2578238809012.

It is not a weakly prime, because it can be changed into another prime (2578238805067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289119404533 + 1289119404534.

It is an arithmetic number, because the mean of its divisors is an integer number (1289119404534).

Almost surely, 2^{2578238809067} is an apocalyptic number.

2578238809067 is a deficient number, since it is larger than the sum of its proper divisors (1).

2578238809067 is an equidigital number, since it uses as much as digits as its factorization.

2578238809067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 2578238809067 in words is "two trillion, five hundred seventy-eight billion, two hundred thirty-eight million, eight hundred nine thousand, sixty-seven".