28358477485381 has 4 divisors (see below), whose sum is σ = 29851028932000. Its totient is φ = 26865926038764.

The previous prime is 28358477485313. The next prime is 28358477485427. The reversal of 28358477485381 is 18358477485382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28358477485381 - 2¹¹ = 28358477483333 is a prime.

It is a super-2 number, since 2×28358477485381² (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 (28358477485781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746275723281 + ... + 746275723318.

It is an arithmetic number, because the mean of its divisors is an integer number (7462757233000).

Almost surely, 2^{28358477485381} is an apocalyptic number.

It is an amenable number.

28358477485381 is a deficient number, since it is larger than the sum of its proper divisors (1492551446619).

28358477485381 is a wasteful number, since it uses less digits than its factorization.

28358477485381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492551446618.

The product of its digits is 1445068800, while the sum is 73.

Subtracting from 28358477485381 its reverse (18358477485382), we obtain a palindrome (9999999999999).

The spelling of 28358477485381 in words is "twenty-eight trillion, three hundred fifty-eight billion, four hundred seventy-seven million, four hundred eighty-five thousand, three hundred eighty-one".