278360854851 has 4 divisors (see below), whose sum is σ = 371147806472. Its totient is φ = 185573903232.

The previous prime is 278360854831. The next prime is 278360854867. The reversal of 278360854851 is 158458063872.

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

It is not a de Polignac number, because 278360854851 - 2⁶ = 278360854787 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 278360854791 and 278360854800.

It is not an unprimeable number, because it can be changed into a prime (278360854801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46393475806 + ... + 46393475811.

It is an arithmetic number, because the mean of its divisors is an integer number (92786951618).

Almost surely, 2^278360854851 is an apocalyptic number.

278360854851 is a deficient number, since it is larger than the sum of its proper divisors (92786951621).

278360854851 is an equidigital number, since it uses as much as digits as its factorization.

278360854851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92786951620.

The product of its (nonzero) digits is 12902400, while the sum is 57.

The spelling of 278360854851 in words is "two hundred seventy-eight billion, three hundred sixty million, eight hundred fifty-four thousand, eight hundred fifty-one".