278478141245 has 8 divisors (see below), whose sum is σ = 341283849984. Its totient is φ = 218042459344.

The previous prime is 278478141241. The next prime is 278478141299. The reversal of 278478141245 is 542141874872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 278478141245 - 2² = 278478141241 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278478141241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592506449 + ... + 592506918.

It is an arithmetic number, because the mean of its divisors is an integer number (42660481248).

Almost surely, 2^278478141245 is an apocalyptic number.

It is an amenable number.

278478141245 is a deficient number, since it is larger than the sum of its proper divisors (62805708739).

278478141245 is a wasteful number, since it uses less digits than its factorization.

278478141245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185013419.

The product of its digits is 4014080, while the sum is 53.

The spelling of 278478141245 in words is "two hundred seventy-eight billion, four hundred seventy-eight million, one hundred forty-one thousand, two hundred forty-five".