28238071195519 has 16 divisors (see below), whose sum is σ = 28415719600128. Its totient is φ = 28060900578432.

The previous prime is 28238071195507. The next prime is 28238071195577. The reversal of 28238071195519 is 91559117083282.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28238071195519 - 2⁵ = 28238071195487 is a prime.

It is a super-2 number, since 2×28238071195519² (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 (28238071175519) 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, 625724134 + ... + 625769260.

It is an arithmetic number, because the mean of its divisors is an integer number (1775982475008).

Almost surely, 2^{28238071195519} is an apocalyptic number.

28238071195519 is a deficient number, since it is larger than the sum of its proper divisors (177648404609).

28238071195519 is a wasteful number, since it uses less digits than its factorization.

28238071195519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50334.

The product of its (nonzero) digits is 10886400, while the sum is 61.

The spelling of 28238071195519 in words is "twenty-eight trillion, two hundred thirty-eight billion, seventy-one million, one hundred ninety-five thousand, five hundred nineteen".