5278121368 has 32 divisors (see below), whose sum is σ = 10667588400. Its totient is φ = 2433806208.

The previous prime is 5278121357. The next prime is 5278121389. The reversal of 5278121368 is 8631218725.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92455 + ... + 138217.

Almost surely, 2^5278121368 is an apocalyptic number.

It is an amenable number.

5278121368 is an abundant number, since it is smaller than the sum of its proper divisors (5389467032).

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

5278121368 is a wasteful number, since it uses less digits than its factorization.

5278121368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46891 (or 46887 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 5278121368 is about 72650.6804372815. The cubic root of 5278121368 is about 1741.1109925969.

The spelling of 5278121368 in words is "five billion, two hundred seventy-eight million, one hundred twenty-one thousand, three hundred sixty-eight".