228840407209735 has 4 divisors (see below), whose sum is σ = 274608488651688. Its totient is φ = 183072325767784.

The previous prime is 228840407209691. The next prime is 228840407209741. The reversal of 228840407209735 is 537902704048822.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228840407209735 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22884040720969 + ... + 22884040720978.

It is an arithmetic number, because the mean of its divisors is an integer number (68652122162922).

Almost surely, 2^{228840407209735} is an apocalyptic number.

228840407209735 is a deficient number, since it is larger than the sum of its proper divisors (45768081441953).

228840407209735 is an equidigital number, since it uses as much as digits as its factorization.

228840407209735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45768081441952.

The product of its (nonzero) digits is 54190080, while the sum is 61.

The spelling of 228840407209735 in words is "two hundred twenty-eight trillion, eight hundred forty billion, four hundred seven million, two hundred nine thousand, seven hundred thirty-five".