28260971051 has 4 divisors (see below), whose sum is σ = 29748390600. Its totient is φ = 26773551504.

The previous prime is 28260971029. The next prime is 28260971077. The reversal of 28260971051 is 15017906282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15017906282 = 2 ⋅7508953141.

It is a cyclic number.

It is not a de Polignac number, because 28260971051 - 2¹⁸ = 28260708907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28260971551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743709746 + ... + 743709783.

It is an arithmetic number, because the mean of its divisors is an integer number (7437097650).

Almost surely, 2^28260971051 is an apocalyptic number.

28260971051 is a deficient number, since it is larger than the sum of its proper divisors (1487419549).

28260971051 is a wasteful number, since it uses less digits than its factorization.

28260971051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487419548.

The product of its (nonzero) digits is 60480, while the sum is 41.

The spelling of 28260971051 in words is "twenty-eight billion, two hundred sixty million, nine hundred seventy-one thousand, fifty-one".