229615603778 has 18 divisors (see below), whose sum is σ = 378593389587. Its totient is φ = 104367340660.

The previous prime is 229615603771. The next prime is 229615603793. The reversal of 229615603778 is 877306516922.

It can be written as a sum of positive squares in only one way, i.e., 114807801889 + 114807801889 = 338833^2 + 338833^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=338833.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (229615603771) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7438925 + ... + 7469727.

Almost surely, 2^229615603778 is an apocalyptic number.

229615603778 is a deficient number, since it is larger than the sum of its proper divisors (148977785809).

229615603778 is an frugal number, since it uses more digits than its factorization.

229615603778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61630 (or 30816 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 229615603778 in words is "two hundred twenty-nine billion, six hundred fifteen million, six hundred three thousand, seven hundred seventy-eight".