229513965128 has 36 divisors (see below), whose sum is σ = 500618750985. Its totient is φ = 98359062816.

The previous prime is 229513965113. The next prime is 229513965137. The reversal of 229513965128 is 821569315922.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 211984734724 + 17529230404 = 460418^2 + 132398^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=338758.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 229513965128.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 9473126 + ... + 9497322.

Almost surely, 2^229513965128 is an apocalyptic number.

229513965128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

229513965128 is an abundant number, since it is smaller than the sum of its proper divisors (271104785857).

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

229513965128 is an frugal number, since it uses more digits than its factorization.

229513965128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48414 (or 24206 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 53.

The spelling of 229513965128 in words is "two hundred twenty-nine billion, five hundred thirteen million, nine hundred sixty-five thousand, one hundred twenty-eight".