228161235471 has 16 divisors (see below), whose sum is σ = 328458355680. Its totient is φ = 140045961600.

The previous prime is 228161235469. The next prime is 228161235479. The reversal of 228161235471 is 174532161822.

It is not a de Polignac number, because 228161235471 - 2¹ = 228161235469 is a prime.

It is a super-3 number, since 3×228161235471³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228161235479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7504480 + ... + 7534821.

It is an arithmetic number, because the mean of its divisors is an integer number (20528647230).

Almost surely, 2^228161235471 is an apocalyptic number.

228161235471 is a deficient number, since it is larger than the sum of its proper divisors (100297120209).

228161235471 is a wasteful number, since it uses less digits than its factorization.

228161235471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15039706.

The product of its digits is 161280, while the sum is 42.

The spelling of 228161235471 in words is "two hundred twenty-eight billion, one hundred sixty-one million, two hundred thirty-five thousand, four hundred seventy-one".