28135520354358 has 24 divisors (see below), whose sum is σ = 61795366625928. Its totient is φ = 9250034088672.

The previous prime is 28135520354327. The next prime is 28135520354371. The reversal of 28135520354358 is 85345302553182.

It is a happy number.

28135520354358 is a `hidden beast` number, since 2 + 8 + 1 + 3 + 552 + 0 + 3 + 54 + 35 + 8 = 666.

It is a super-2 number, since 2×28135520354358² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10706056660 + ... + 10706059287.

It is an arithmetic number, because the mean of its divisors is an integer number (2574806942747).

Almost surely, 2^{28135520354358} is an apocalyptic number.

28135520354358 is an abundant number, since it is smaller than the sum of its proper divisors (33659846271570).

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

28135520354358 is a wasteful number, since it uses less digits than its factorization.

28135520354358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21412116028 (or 21412116025 counting only the distinct ones).

The product of its (nonzero) digits is 17280000, while the sum is 54.

The spelling of 28135520354358 in words is "twenty-eight trillion, one hundred thirty-five billion, five hundred twenty million, three hundred fifty-four thousand, three hundred fifty-eight".