228756980405 has 12 divisors (see below), whose sum is σ = 291605785860. Its totient is φ = 172240548864.

The previous prime is 228756980383. The next prime is 228756980443. The reversal of 228756980405 is 504089657822.

It is a happy number.

228756980405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 11662488049 + 217094492356 = 107993^2 + 465934^2 .

It is not a de Polignac number, because 228756980405 - 2²⁰ = 228755931829 is a prime.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 79153220 + ... + 79156109.

It is an arithmetic number, because the mean of its divisors is an integer number (24300482155).

Almost surely, 2^228756980405 is an apocalyptic number.

It is an amenable number.

228756980405 is a deficient number, since it is larger than the sum of its proper divisors (62848805455).

228756980405 is a wasteful number, since it uses less digits than its factorization.

228756980405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158309368 (or 158309351 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 228756980405 in words is "two hundred twenty-eight billion, seven hundred fifty-six million, nine hundred eighty thousand, four hundred five".