278720604031 has 2 divisors, whose sum is σ = 278720604032. Its totient is φ = 278720604030.

The previous prime is 278720603981. The next prime is 278720604083. The reversal of 278720604031 is 130406027872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 278720604031 - 2²⁷ = 278586386303 is a prime.

It is a super-2 number, since 2×278720604031² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (278720601031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139360302015 + 139360302016.

It is an arithmetic number, because the mean of its divisors is an integer number (139360302016).

Almost surely, 2^278720604031 is an apocalyptic number.

278720604031 is a deficient number, since it is larger than the sum of its proper divisors (1).

278720604031 is an equidigital number, since it uses as much as digits as its factorization.

278720604031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 278720604031 in words is "two hundred seventy-eight billion, seven hundred twenty million, six hundred four thousand, thirty-one".