28599309051 has 4 divisors (see below), whose sum is σ = 38132412072. Its totient is φ = 19066206032.

The previous prime is 28599309017. The next prime is 28599309071. The reversal of 28599309051 is 15090399582.

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

It is a cyclic number.

It is not a de Polignac number, because 28599309051 - 2⁷ = 28599308923 is a prime.

It is a super-2 number, since 2×28599309051² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28599308985 and 28599309003.

It is not an unprimeable number, because it can be changed into a prime (28599309071) 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, 4766551506 + ... + 4766551511.

It is an arithmetic number, because the mean of its divisors is an integer number (9533103018).

Almost surely, 2^28599309051 is an apocalyptic number.

28599309051 is a deficient number, since it is larger than the sum of its proper divisors (9533103021).

28599309051 is an equidigital number, since it uses as much as digits as its factorization.

28599309051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9533103020.

The product of its (nonzero) digits is 874800, while the sum is 51.

The spelling of 28599309051 in words is "twenty-eight billion, five hundred ninety-nine million, three hundred nine thousand, fifty-one".