278360854849 has 16 divisors (see below), whose sum is σ = 362136314880. Its totient is φ = 207473927760.

The previous prime is 278360854831. The next prime is 278360854867. The reversal of 278360854849 is 948458063872.

It is an interprime number because it is at equal distance from previous prime (278360854831) and next prime (278360854867).

It is not a de Polignac number, because 278360854849 - 2⁵ = 278360854817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (278360854549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78586839 + ... + 78590380.

It is an arithmetic number, because the mean of its divisors is an integer number (22633519680).

Almost surely, 2^278360854849 is an apocalyptic number.

It is an amenable number.

278360854849 is a deficient number, since it is larger than the sum of its proper divisors (83775460031).

278360854849 is a wasteful number, since it uses less digits than its factorization.

278360854849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157177260.

The product of its (nonzero) digits is 92897280, while the sum is 64.

The spelling of 278360854849 in words is "two hundred seventy-eight billion, three hundred sixty million, eight hundred fifty-four thousand, eight hundred forty-nine".