278020086139 has 2 divisors, whose sum is σ = 278020086140. Its totient is φ = 278020086138.

The previous prime is 278020086103. The next prime is 278020086161. The reversal of 278020086139 is 931680020872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 278020086139 - 2¹⁵ = 278020053371 is a prime.

It is not a weakly prime, because it can be changed into another prime (278020086739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139010043069 + 139010043070.

It is an arithmetic number, because the mean of its divisors is an integer number (139010043070).

Almost surely, 2^278020086139 is an apocalyptic number.

278020086139 is a deficient number, since it is larger than the sum of its proper divisors (1).

278020086139 is an equidigital number, since it uses as much as digits as its factorization.

278020086139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 278020086139 in words is "two hundred seventy-eight billion, twenty million, eighty-six thousand, one hundred thirty-nine".