5321578978 has 16 divisors (see below), whose sum is σ = 8269007616. Its totient is φ = 2565850320.

The previous prime is 5321578973. The next prime is 5321578979. The reversal of 5321578978 is 8798751235.

It is not an unprimeable number, because it can be changed into a prime (5321578973) by changing a digit.

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, 134101 + ... + 169192.

It is an arithmetic number, because the mean of its divisors is an integer number (516812976).

Almost surely, 2^5321578978 is an apocalyptic number.

5321578978 is a deficient number, since it is larger than the sum of its proper divisors (2947428638).

5321578978 is a wasteful number, since it uses less digits than its factorization.

5321578978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303609.

The product of its digits is 4233600, while the sum is 55.

The square root of 5321578978 is about 72949.1533741139. The cubic root of 5321578978 is about 1745.8764384628.

The spelling of 5321578978 in words is "five billion, three hundred twenty-one million, five hundred seventy-eight thousand, nine hundred seventy-eight".