278495493160 has 32 divisors (see below), whose sum is σ = 629763696000. Its totient is φ = 110838404160.

The previous prime is 278495493149. The next prime is 278495493163. The reversal of 278495493160 is 61394594872.

It is a junction number, because it is equal to n+sod(n) for n = 278495493095 and 278495493104.

It is not an unprimeable number, because it can be changed into a prime (278495493163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17485476 + ... + 17501395.

It is an arithmetic number, because the mean of its divisors is an integer number (19680115500).

It is a 1-persistent number, because it is pandigital, but 2⋅278495493160 = 556990986320 is not.

Almost surely, 2^278495493160 is an apocalyptic number.

278495493160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278495493160 is an abundant number, since it is smaller than the sum of its proper divisors (351268202840).

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

278495493160 is a wasteful number, since it uses less digits than its factorization.

278495493160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34987081 (or 34987077 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 58.

The spelling of 278495493160 in words is "two hundred seventy-eight billion, four hundred ninety-five million, four hundred ninety-three thousand, one hundred sixty".