28331678751 has 16 divisors (see below), whose sum is σ = 39000698880. Its totient is φ = 18275427360.

The previous prime is 28331678723. The next prime is 28331678803. The reversal of 28331678751 is 15787613382.

It is not a de Polignac number, because 28331678751 - 2⁵ = 28331678719 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28331678694 and 28331678703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28331678351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616065 + ... + 660453.

It is an arithmetic number, because the mean of its divisors is an integer number (2437543680).

Almost surely, 2^28331678751 is an apocalyptic number.

28331678751 is a deficient number, since it is larger than the sum of its proper divisors (10669020129).

28331678751 is a wasteful number, since it uses less digits than its factorization.

28331678751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51286.

The product of its digits is 1693440, while the sum is 51.

The spelling of 28331678751 in words is "twenty-eight billion, three hundred thirty-one million, six hundred seventy-eight thousand, seven hundred fifty-one".