28391110939303 has 16 divisors (see below), whose sum is σ = 32583482280000. Its totient is φ = 24233073334272.

The previous prime is 28391110939249. The next prime is 28391110939309. The reversal of 28391110939303 is 30393901119382.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28391110939303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28391110939309) 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, 7084978 + ... + 10343071.

It is an arithmetic number, because the mean of its divisors is an integer number (2036467642500).

Almost surely, 2^{28391110939303} is an apocalyptic number.

28391110939303 is a deficient number, since it is larger than the sum of its proper divisors (4192371340697).

28391110939303 is a wasteful number, since it uses less digits than its factorization.

28391110939303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17429034.

The product of its (nonzero) digits is 944784, while the sum is 52.

The spelling of 28391110939303 in words is "twenty-eight trillion, three hundred ninety-one billion, one hundred ten million, nine hundred thirty-nine thousand, three hundred three".