5427878644 has 24 divisors (see below), whose sum is σ = 9747214848. Its totient is φ = 2643188160.

The previous prime is 5427878611. The next prime is 5427878671. The reversal of 5427878644 is 4468787245.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68077 + ... + 124459.

It is an arithmetic number, because the mean of its divisors is an integer number (406133952).

Almost surely, 2^5427878644 is an apocalyptic number.

It is an amenable number.

5427878644 is a deficient number, since it is larger than the sum of its proper divisors (4319336204).

5427878644 is a wasteful number, since it uses less digits than its factorization.

5427878644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57015 (or 57013 counting only the distinct ones).

The product of its digits is 12042240, while the sum is 55.

The square root of 5427878644 is about 73674.1382304537. The cubic root of 5427878644 is about 1757.4246342798.

The spelling of 5427878644 in words is "five billion, four hundred twenty-seven million, eight hundred seventy-eight thousand, six hundred forty-four".