228861033134640 has 160 divisors (see below), whose sum is σ = 719379388575936. Its totient is φ = 60177564794880.

The previous prime is 228861033134621. The next prime is 228861033134653. The reversal of 228861033134640 is 46431330168822.

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, 64156102 + ... + 67629338.

Almost surely, 2^{228861033134640} is an apocalyptic number.

228861033134640 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 228861033134640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359689694287968).

228861033134640 is an abundant number, since it is smaller than the sum of its proper divisors (490518355441296).

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

228861033134640 is a wasteful number, since it uses less digits than its factorization.

228861033134640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3477087 (or 3477081 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 51.

The spelling of 228861033134640 in words is "two hundred twenty-eight trillion, eight hundred sixty-one billion, thirty-three million, one hundred thirty-four thousand, six hundred forty".