278000300005 has 4 divisors (see below), whose sum is σ = 333600360012. Its totient is φ = 222400240000.

The previous prime is 278000299937. The next prime is 278000300033. The reversal of 278000300005 is 500003000872.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 170835075684 + 107165224321 = 413322^2 + 327361^2 .

It is not a de Polignac number, because 278000300005 - 2²³ = 277991911397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27800029996 + ... + 27800030005.

It is an arithmetic number, because the mean of its divisors is an integer number (83400090003).

Almost surely, 2^278000300005 is an apocalyptic number.

It is an amenable number.

278000300005 is a deficient number, since it is larger than the sum of its proper divisors (55600060007).

278000300005 is an equidigital number, since it uses as much as digits as its factorization.

278000300005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55600060006.

The product of its (nonzero) digits is 1680, while the sum is 25.

Adding to 278000300005 its reverse (500003000872), we get a palindrome (778003300877).

The spelling of 278000300005 in words is "two hundred seventy-eight billion, three hundred thousand, five".