228012577789 has 2 divisors, whose sum is σ = 228012577790. Its totient is φ = 228012577788.

The previous prime is 228012577781. The next prime is 228012577823. The reversal of 228012577789 is 987775210822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227990015289 + 22562500 = 477483^2 + 4750^2 .

It is a cyclic number.

It is not a de Polignac number, because 228012577789 - 2³ = 228012577781 is a prime.

It is a super-2 number, since 2×228012577789² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228012577781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114006288894 + 114006288895.

It is an arithmetic number, because the mean of its divisors is an integer number (114006288895).

Almost surely, 2^228012577789 is an apocalyptic number.

It is an amenable number.

228012577789 is a deficient number, since it is larger than the sum of its proper divisors (1).

228012577789 is an equidigital number, since it uses as much as digits as its factorization.

228012577789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7902720, while the sum is 58.

The spelling of 228012577789 in words is "two hundred twenty-eight billion, twelve million, five hundred seventy-seven thousand, seven hundred eighty-nine".