278325523872 has 192 divisors, whose sum is σ = 909516988800. Its totient is φ = 82061475840.

The previous prime is 278325523867. The next prime is 278325523873.

It is a happy number.

278325523872 is a `hidden beast` number, since 2 + 7 + 8 + 3 + 2 + 552 + 3 + 87 + 2 = 666.

278325523872 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (278325523873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44097 + ... + 747392.

It is an arithmetic number, because the mean of its divisors is an integer number (4737067650).

Almost surely, 2^278325523872 is an apocalyptic number.

278325523872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278325523872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454758494400).

278325523872 is an abundant number, since it is smaller than the sum of its proper divisors (631191464928).

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

278325523872 is a wasteful number, since it uses less digits than its factorization.

278325523872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791556 (or 791542 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 54.

The spelling of 278325523872 in words is "two hundred seventy-eight billion, three hundred twenty-five million, five hundred twenty-three thousand, eight hundred seventy-two".