278259074268 has 96 divisors (see below), whose sum is σ = 768892508160. Its totient is φ = 76632998400.

The previous prime is 278259074267. The next prime is 278259074281. The reversal of 278259074268 is 862470952872.

278259074268 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×278259074268² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278259074267) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1369005 + ... + 1559067.

It is an arithmetic number, because the mean of its divisors is an integer number (8009296960).

Almost surely, 2^278259074268 is an apocalyptic number.

278259074268 is a gapful number since it is divisible by the number (28) 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 278259074268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384446254080).

278259074268 is an abundant number, since it is smaller than the sum of its proper divisors (490633433892).

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

278259074268 is a wasteful number, since it uses less digits than its factorization.

278259074268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190707 (or 190705 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 60.

The spelling of 278259074268 in words is "two hundred seventy-eight billion, two hundred fifty-nine million, seventy-four thousand, two hundred sixty-eight".