228571960465 has 32 divisors (see below), whose sum is σ = 282911680800. Its totient is φ = 177171118080.

The previous prime is 228571960453. The next prime is 228571960469. The reversal of 228571960465 is 564069175822.

It is a Cunningham number, because it is equal to 478092²+1.

It can be written as a sum of positive squares in 16 ways, for example, as 14913538641 + 213658421824 = 122121^2 + 462232^2 .

It is not a de Polignac number, because 228571960465 - 2⁵ = 228571960433 is a prime.

It is a super-2 number, since 2×228571960465² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228571960469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37909071 + ... + 37915099.

It is an arithmetic number, because the mean of its divisors is an integer number (8840990025).

Almost surely, 2^228571960465 is an apocalyptic number.

It is an amenable number.

228571960465 is a deficient number, since it is larger than the sum of its proper divisors (54339720335).

228571960465 is a wasteful number, since it uses less digits than its factorization.

228571960465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7317.

The product of its (nonzero) digits is 7257600, while the sum is 55.

The spelling of 228571960465 in words is "two hundred twenty-eight billion, five hundred seventy-one million, nine hundred sixty thousand, four hundred sixty-five".