228840407209737 has 24 divisors (see below), whose sum is σ = 333827014028040. Its totient is φ = 151046599948800.

The previous prime is 228840407209691. The next prime is 228840407209741. The reversal of 228840407209737 is 737902704048822.

It is a happy number.

228840407209737 is a `hidden beast` number, since 2 + 2 + 88 + 40 + 407 + 20 + 97 + 3 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 79957557726201 + 148882849483536 = 8941899^2 + 12201756^2 .

It is not a de Polignac number, because 228840407209737 - 2⁸ = 228840407209481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228840407229737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41037553 + ... + 46279169.

It is an arithmetic number, because the mean of its divisors is an integer number (13909458917835).

Almost surely, 2^{228840407209737} is an apocalyptic number.

It is an amenable number.

228840407209737 is a deficient number, since it is larger than the sum of its proper divisors (104986606818303).

228840407209737 is a wasteful number, since it uses less digits than its factorization.

228840407209737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289753 (or 5289750 counting only the distinct ones).

The product of its (nonzero) digits is 75866112, while the sum is 63.

The spelling of 228840407209737 in words is "two hundred twenty-eight trillion, eight hundred forty billion, four hundred seven million, two hundred nine thousand, seven hundred thirty-seven".