278452241720 has 16 divisors (see below), whose sum is σ = 626517543960. Its totient is φ = 111380896672.

The previous prime is 278452241719. The next prime is 278452241723. The reversal of 278452241720 is 27142254872.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278452241723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3480652982 + ... + 3480653061.

Almost surely, 2^278452241720 is an apocalyptic number.

278452241720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278452241720 is an abundant number, since it is smaller than the sum of its proper divisors (348065302240).

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

278452241720 is a wasteful number, since it uses less digits than its factorization.

278452241720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6961306054 (or 6961306050 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 44.

The spelling of 278452241720 in words is "two hundred seventy-eight billion, four hundred fifty-two million, two hundred forty-one thousand, seven hundred twenty".