2578238809039 has 2 divisors, whose sum is σ = 2578238809040. Its totient is φ = 2578238809038.

The previous prime is 2578238808991. The next prime is 2578238809067. The reversal of 2578238809039 is 9309088328752.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2578238809039 - 2⁷ = 2578238808911 is a prime.

It is a super-2 number, since 2×2578238809039² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2578238809639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289119404519 + 1289119404520.

It is an arithmetic number, because the mean of its divisors is an integer number (1289119404520).

Almost surely, 2^{2578238809039} is an apocalyptic number.

2578238809039 is a deficient number, since it is larger than the sum of its proper divisors (1).

2578238809039 is an equidigital number, since it uses as much as digits as its factorization.

2578238809039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52254720, while the sum is 64.

The spelling of 2578238809039 in words is "two trillion, five hundred seventy-eight billion, two hundred thirty-eight million, eight hundred nine thousand, thirty-nine".