28615454141 has 4 divisors (see below), whose sum is σ = 28618278300. Its totient is φ = 28612629984.

The previous prime is 28615454099. The next prime is 28615454149. The reversal of 28615454141 is 14145451682.

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

It can be written as a sum of positive squares in 2 ways, for example, as 26401375225 + 2214078916 = 162485^2 + 47054^2 .

It is a cyclic number.

It is not a de Polignac number, because 28615454141 - 2¹⁰ = 28615453117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28615454149) 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, 1396826 + ... + 1417163.

It is an arithmetic number, because the mean of its divisors is an integer number (7154569575).

Almost surely, 2^28615454141 is an apocalyptic number.

It is an amenable number.

28615454141 is a deficient number, since it is larger than the sum of its proper divisors (2824159).

28615454141 is a wasteful number, since it uses less digits than its factorization.

28615454141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824158.

The product of its digits is 153600, while the sum is 41.

The spelling of 28615454141 in words is "twenty-eight billion, six hundred fifteen million, four hundred fifty-four thousand, one hundred forty-one".