229661129936 has 20 divisors (see below), whose sum is σ = 508535359392. Its totient is φ = 98426198496.

The previous prime is 229661129933. The next prime is 229661129947. The reversal of 229661129936 is 639921166922.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229661129933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1025272790 + ... + 1025273013.

Almost surely, 2^229661129936 is an apocalyptic number.

It is an amenable number.

229661129936 is an abundant number, since it is smaller than the sum of its proper divisors (278874229456).

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

229661129936 is a wasteful number, since it uses less digits than its factorization.

229661129936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050545818 (or 2050545812 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 56.

The spelling of 229661129936 in words is "two hundred twenty-nine billion, six hundred sixty-one million, one hundred twenty-nine thousand, nine hundred thirty-six".