278182260378 has 96 divisors (see below), whose sum is σ = 686298562560. Its totient is φ = 80610335520.

The previous prime is 278182260299. The next prime is 278182260379. The reversal of 278182260378 is 873062281872.

278182260378 is a `hidden beast` number, since 2 + 7 + 8 + 1 + 8 + 2 + 260 + 378 = 666.

It is not an unprimeable number, because it can be changed into a prime (278182260379) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24144103 + ... + 24155621.

It is an arithmetic number, because the mean of its divisors is an integer number (7148943360).

Almost surely, 2^278182260378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278182260378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343149281280).

278182260378 is an abundant number, since it is smaller than the sum of its proper divisors (408116302182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

278182260378 is a wasteful number, since it uses less digits than its factorization.

278182260378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16864 (or 16861 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 278182260378 in words is "two hundred seventy-eight billion, one hundred eighty-two million, two hundred sixty thousand, three hundred seventy-eight".