28341780117 has 16 divisors (see below), whose sum is σ = 43205376000. Its totient is φ = 16188589872.

The previous prime is 28341780113. The next prime is 28341780133. The reversal of 28341780117 is 71108714382.

It is not a de Polignac number, because 28341780117 - 2² = 28341780113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28341780113) 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 15 ways as a sum of consecutive naturals, for example, 227617 + ... + 329382.

It is an arithmetic number, because the mean of its divisors is an integer number (2700336000).

Almost surely, 2^28341780117 is an apocalyptic number.

It is an amenable number.

28341780117 is a deficient number, since it is larger than the sum of its proper divisors (14863595883).

28341780117 is a wasteful number, since it uses less digits than its factorization.

28341780117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559432.

The product of its (nonzero) digits is 75264, while the sum is 42.

The spelling of 28341780117 in words is "twenty-eight billion, three hundred forty-one million, seven hundred eighty thousand, one hundred seventeen".