278445328413 has 8 divisors (see below), whose sum is σ = 424297643328. Its totient is φ = 159111616224.

The previous prime is 278445328387. The next prime is 278445328417. The reversal of 278445328413 is 314823544872.

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

It is not a de Polignac number, because 278445328413 - 2⁶ = 278445328349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278445328417) 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, 6629650656 + ... + 6629650697.

It is an arithmetic number, because the mean of its divisors is an integer number (53037205416).

Almost surely, 2^278445328413 is an apocalyptic number.

It is an amenable number.

278445328413 is a deficient number, since it is larger than the sum of its proper divisors (145852314915).

278445328413 is a wasteful number, since it uses less digits than its factorization.

278445328413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13259301363.

The product of its digits is 5160960, while the sum is 51.

The spelling of 278445328413 in words is "two hundred seventy-eight billion, four hundred forty-five million, three hundred twenty-eight thousand, four hundred thirteen".