268447657890 has 16 divisors (see below), whose sum is σ = 644274379008. Its totient is φ = 71586042096.

The previous prime is 268447657879. The next prime is 268447657913. The reversal of 268447657890 is 98756744862.

It is a happy number.

268447657890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4474127602 + ... + 4474127661.

It is an arithmetic number, because the mean of its divisors is an integer number (40267148688).

Almost surely, 2^268447657890 is an apocalyptic number.

268447657890 is an abundant number, since it is smaller than the sum of its proper divisors (375826721118).

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

268447657890 is a wasteful number, since it uses less digits than its factorization.

268447657890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8948255273.

The product of its (nonzero) digits is 162570240, while the sum is 66.

The spelling of 268447657890 in words is "two hundred sixty-eight billion, four hundred forty-seven million, six hundred fifty-seven thousand, eight hundred ninety".