28013091347519 has 4 divisors (see below), whose sum is σ = 28013108716920. Its totient is φ = 28013073978120.

The previous prime is 28013091347491. The next prime is 28013091347569. The reversal of 28013091347519 is 91574319031082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28013091347519 - 2⁴⁰ = 26913579719743 is a prime.

It is a super-2 number, since 2×28013091347519² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28013091347569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5985989 + ... + 9584270.

It is an arithmetic number, because the mean of its divisors is an integer number (7003277179230).

Almost surely, 2^{28013091347519} is an apocalyptic number.

28013091347519 is a deficient number, since it is larger than the sum of its proper divisors (17369401).

28013091347519 is a wasteful number, since it uses less digits than its factorization.

28013091347519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17369400.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 28013091347519 in words is "twenty-eight trillion, thirteen billion, ninety-one million, three hundred forty-seven thousand, five hundred nineteen".