228162181504 has 32 divisors (see below), whose sum is σ = 474304541040. Its totient is φ = 109121041920.

The previous prime is 228162181459. The next prime is 228162181529. The reversal of 228162181504 is 405181261822.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38747427 + ... + 38753314.

Almost surely, 2^228162181504 is an apocalyptic number.

It is an amenable number.

228162181504 is an abundant number, since it is smaller than the sum of its proper divisors (246142359536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228162181504 is an equidigital number, since it uses as much as digits as its factorization.

228162181504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77500778 (or 77500766 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 228162181504 in words is "two hundred twenty-eight billion, one hundred sixty-two million, one hundred eighty-one thousand, five hundred four".