28091732130789 has 16 divisors (see below), whose sum is σ = 38164016493504. Its totient is φ = 18373665398400.

The previous prime is 28091732130703. The next prime is 28091732130793. The reversal of 28091732130789 is 98703123719082.

It is not a de Polignac number, because 28091732130789 - 2⁸ = 28091732130533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28091732130799) 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, 180232 + ... + 7497729.

It is an arithmetic number, because the mean of its divisors is an integer number (2385251030844).

Almost surely, 2^{28091732130789} is an apocalyptic number.

It is an amenable number.

28091732130789 is a deficient number, since it is larger than the sum of its proper divisors (10072284362715).

28091732130789 is a wasteful number, since it uses less digits than its factorization.

28091732130789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7701028.

The product of its (nonzero) digits is 9144576, while the sum is 60.

The spelling of 28091732130789 in words is "twenty-eight trillion, ninety-one billion, seven hundred thirty-two million, one hundred thirty thousand, seven hundred eighty-nine".