28351290009 has 48 divisors (see below), whose sum is σ = 45301972352. Its totient is φ = 15448333824.

The previous prime is 28351289969. The next prime is 28351290017. The reversal of 28351290009 is 90009215382.

It is not a de Polignac number, because 28351290009 - 2¹¹ = 28351287961 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28351290089) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3739947 + ... + 3747519.

Almost surely, 2^28351290009 is an apocalyptic number.

It is an amenable number.

28351290009 is a deficient number, since it is larger than the sum of its proper divisors (16950682343).

28351290009 is a wasteful number, since it uses less digits than its factorization.

28351290009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7966 (or 7943 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 28351290009 in words is "twenty-eight billion, three hundred fifty-one million, two hundred ninety thousand, nine".