28003072155516 has 36 divisors (see below), whose sum is σ = 70786501173024. Its totient is φ = 9334231099200.

The previous prime is 28003072155497. The next prime is 28003072155547. The reversal of 28003072155516 is 61555127030082.

28003072155516 is a `hidden beast` number, since 2 + 80 + 0 + 3 + 0 + 7 + 2 + 1 + 55 + 516 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2544820 + ... + 7904571.

Almost surely, 2^{28003072155516} is an apocalyptic number.

It is an amenable number.

28003072155516 is an abundant number, since it is smaller than the sum of its proper divisors (42783429017508).

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

28003072155516 is a wasteful number, since it uses less digits than its factorization.

28003072155516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10523842 (or 10523837 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 45.

Adding to 28003072155516 its reverse (61555127030082), we get a palindrome (89558199185598).

The spelling of 28003072155516 in words is "twenty-eight trillion, three billion, seventy-two million, one hundred fifty-five thousand, five hundred sixteen".