229261344140 has 96 divisors (see below), whose sum is σ = 514510424064. Its totient is φ = 85510876160.

The previous prime is 229261344131. The next prime is 229261344187. The reversal of 229261344140 is 41443162922.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 229261344094 and 229261344103.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17652089 + ... + 17665071.

It is an arithmetic number, because the mean of its divisors is an integer number (5359483584).

Almost surely, 2^229261344140 is an apocalyptic number.

229261344140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229261344140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257255212032).

229261344140 is an abundant number, since it is smaller than the sum of its proper divisors (285249079924).

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

229261344140 is a wasteful number, since it uses less digits than its factorization.

229261344140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13487 (or 13485 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 229261344140 in words is "two hundred twenty-nine billion, two hundred sixty-one million, three hundred forty-four thousand, one hundred forty".