278055054793 has 2 divisors, whose sum is σ = 278055054794. Its totient is φ = 278055054792.

The previous prime is 278055054787. The next prime is 278055054821. The reversal of 278055054793 is 397450550872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150596772624 + 127458282169 = 388068^2 + 357013^2 .

It is a cyclic number.

It is not a de Polignac number, because 278055054793 - 2⁹ = 278055054281 is a prime.

It is a super-2 number, since 2×278055054793² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (278055034793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139027527396 + 139027527397.

It is an arithmetic number, because the mean of its divisors is an integer number (139027527397).

Almost surely, 2^278055054793 is an apocalyptic number.

It is an amenable number.

278055054793 is a deficient number, since it is larger than the sum of its proper divisors (1).

278055054793 is an equidigital number, since it uses as much as digits as its factorization.

278055054793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584000, while the sum is 55.

The spelling of 278055054793 in words is "two hundred seventy-eight billion, fifty-five million, fifty-four thousand, seven hundred ninety-three".