28149498653 has 4 divisors (see below), whose sum is σ = 28175020608. Its totient is φ = 28123976700.

The previous prime is 28149498613. The next prime is 28149498661. The reversal of 28149498653 is 35689494182.

It is a happy number.

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 28149498653 - 2¹⁴ = 28149482269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28149498592 and 28149498601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28149498613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12759323 + ... + 12761528.

It is an arithmetic number, because the mean of its divisors is an integer number (7043755152).

Almost surely, 2^28149498653 is an apocalyptic number.

It is an amenable number.

28149498653 is a deficient number, since it is larger than the sum of its proper divisors (25521955).

28149498653 is a wasteful number, since it uses less digits than its factorization.

28149498653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25521954.

The product of its digits is 14929920, while the sum is 59.

The spelling of 28149498653 in words is "twenty-eight billion, one hundred forty-nine million, four hundred ninety-eight thousand, six hundred fifty-three".