228521960765 has 12 divisors (see below), whose sum is σ = 318998002716. Its totient is φ = 156700772928.

The previous prime is 228521960753. The next prime is 228521960827. The reversal of 228521960765 is 567069125822.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 170355133081 + 58166827684 = 412741^2 + 241178^2 .

It is not a de Polignac number, because 228521960765 - 2⁴ = 228521960749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466371104 + ... + 466371593.

It is an arithmetic number, because the mean of its divisors is an integer number (26583166893).

Almost surely, 2^228521960765 is an apocalyptic number.

It is an amenable number.

228521960765 is a deficient number, since it is larger than the sum of its proper divisors (90476041951).

228521960765 is an equidigital number, since it uses as much as digits as its factorization.

228521960765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932742716 (or 932742709 counting only the distinct ones).

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 228521960765 in words is "two hundred twenty-eight billion, five hundred twenty-one million, nine hundred sixty thousand, seven hundred sixty-five".