278474655006720 has 608 divisors, whose sum is σ = 993163323315840. Its totient is φ = 74032443555840.

The previous prime is 278474655006677. The next prime is 278474655006721. The reversal of 278474655006720 is 27600556474872.

278474655006720 is a `hidden beast` number, since 2 + 7 + 8 + 4 + 7 + 4 + 6 + 550 + 0 + 6 + 72 + 0 = 666.

It is a super-2 number, since 2×278474655006720² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (278474655006721) 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, 11713892754 + ... + 11713916526.

Almost surely, 2^{278474655006720} is an apocalyptic number.

278474655006720 is a gapful number since it is divisible by the number (20) 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 278474655006720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496581661657920).

278474655006720 is an abundant number, since it is smaller than the sum of its proper divisors (714688668309120).

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

278474655006720 is an frugal number, since it uses more digits than its factorization.

278474655006720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24154 (or 24114 counting only the distinct ones).

The product of its (nonzero) digits is 158054400, while the sum is 63.

The spelling of 278474655006720 in words is "two hundred seventy-eight trillion, four hundred seventy-four billion, six hundred fifty-five million, six thousand, seven hundred twenty".