228551881041 has 75 divisors (see below), whose sum is σ = 376413806505. Its totient is φ = 138200764680.

The previous prime is 228551881021. The next prime is 228551881057. The reversal of 228551881041 is 140188155822.

The square root of 228551881041 is 478071.

It is a perfect power (a square), and thus also a powerful number.

228551881041 is a `hidden beast` number, since 2 + 2 + 8 + 551 + 88 + 10 + 4 + 1 = 666.

It is not a de Polignac number, because 228551881041 - 2¹³ = 228551872849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228551881001) by changing a digit.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 520619100 + ... + 520619538.

Almost surely, 2^228551881041 is an apocalyptic number.

228551881041 is the 478071-st square number.

228551881041 is the 239036-th centered octagonal number.

It is an amenable number.

228551881041 is a deficient number, since it is larger than the sum of its proper divisors (147861925464).

228551881041 is an frugal number, since it uses more digits than its factorization.

228551881041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 453 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 45.

The spelling of 228551881041 in words is "two hundred twenty-eight billion, five hundred fifty-one million, eight hundred eighty-one thousand, forty-one".