228272701729 has 2 divisors, whose sum is σ = 228272701730. Its totient is φ = 228272701728.

The previous prime is 228272701693. The next prime is 228272701733. The reversal of 228272701729 is 927107272822.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 182519491729 + 45753210000 = 427223^2 + 213900^2 .

It is a cyclic number.

It is not a de Polignac number, because 228272701729 - 2³³ = 219682767137 is a prime.

It is not a weakly prime, because it can be changed into another prime (228272701739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114136350864 + 114136350865.

It is an arithmetic number, because the mean of its divisors is an integer number (114136350865).

Almost surely, 2^228272701729 is an apocalyptic number.

It is an amenable number.

228272701729 is a deficient number, since it is larger than the sum of its proper divisors (1).

228272701729 is an equidigital number, since it uses as much as digits as its factorization.

228272701729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 228272701729 in words is "two hundred twenty-eight billion, two hundred seventy-two million, seven hundred one thousand, seven hundred twenty-nine".