320618903650 has 24 divisors (see below), whose sum is σ = 598727085264. Its totient is φ = 127736610000.

The previous prime is 320618903629. The next prime is 320618903651. The reversal of 320618903650 is 56309816023.

It is a junction number, because it is equal to n+sod(n) for n = 320618903597 and 320618903606.

It is not an unprimeable number, because it can be changed into a prime (320618903651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12761112 + ... + 12786211.

It is an arithmetic number, because the mean of its divisors is an integer number (24946961886).

Almost surely, 2^320618903650 is an apocalyptic number.

320618903650 is a deficient number, since it is larger than the sum of its proper divisors (278108181614).

320618903650 is a wasteful number, since it uses less digits than its factorization.

320618903650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25547586 (or 25547581 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 320618903650 in words is "three hundred twenty billion, six hundred eighteen million, nine hundred three thousand, six hundred fifty".