28196465109 has 8 divisors (see below), whose sum is σ = 37597704672. Its totient is φ = 18796434480.

The previous prime is 28196465093. The next prime is 28196465117. The reversal of 28196465109 is 90156469182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28196465109 - 2⁴ = 28196465093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28196465189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246334 + ... + 342159.

It is an arithmetic number, because the mean of its divisors is an integer number (4699713084).

Almost surely, 2^28196465109 is an apocalyptic number.

It is an amenable number.

28196465109 is a deficient number, since it is larger than the sum of its proper divisors (9401239563).

28196465109 is a wasteful number, since it uses less digits than its factorization.

28196465109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604467.

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 28196465109 in words is "twenty-eight billion, one hundred ninety-six million, four hundred sixty-five thousand, one hundred nine".