28531103940816 has 40 divisors (see below), whose sum is σ = 73998998698464. Its totient is φ = 9472478064000.

The previous prime is 28531103940811. The next prime is 28531103940827. The reversal of 28531103940816 is 61804930113582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28531103940811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1184047711 + ... + 1184071806.

Almost surely, 2^{28531103940816} is an apocalyptic number.

It is an amenable number.

28531103940816 is an abundant number, since it is smaller than the sum of its proper divisors (45467894757648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28531103940816 is a wasteful number, since it uses less digits than its factorization.

28531103940816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368119779 (or 2368119773 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 28531103940816 in words is "twenty-eight trillion, five hundred thirty-one billion, one hundred three million, nine hundred forty thousand, eight hundred sixteen".