28324464718978 has 16 divisors (see below), whose sum is σ = 42511898232000. Its totient is φ = 14153834467152.

The previous prime is 28324464718969. The next prime is 28324464719011. The reversal of 28324464718978 is 87981746442382.

It is a self number, because there is not a number n which added to its sum of digits gives 28324464718978.

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, 22235203 + ... + 23474521.

It is an arithmetic number, because the mean of its divisors is an integer number (2656993639500).

Almost surely, 2^{28324464718978} is an apocalyptic number.

28324464718978 is a deficient number, since it is larger than the sum of its proper divisors (14187433513022).

28324464718978 is a wasteful number, since it uses less digits than its factorization.

28324464718978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1246089.

The product of its digits is 1040449536, while the sum is 73.

The spelling of 28324464718978 in words is "twenty-eight trillion, three hundred twenty-four billion, four hundred sixty-four million, seven hundred eighteen thousand, nine hundred seventy-eight".