4650613117921 has 2 divisors, whose sum is σ = 4650613117922. Its totient is φ = 4650613117920.

The previous prime is 4650613117903. The next prime is 4650613117957. The reversal of 4650613117921 is 1297113160564.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4029494169600 + 621118948321 = 2007360^2 + 788111^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4650613117921 is a prime.

It is not a weakly prime, because it can be changed into another prime (4650613117621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2325306558960 + 2325306558961.

It is an arithmetic number, because the mean of its divisors is an integer number (2325306558961).

Almost surely, 2^{4650613117921} is an apocalyptic number.

It is an amenable number.

4650613117921 is a deficient number, since it is larger than the sum of its proper divisors (1).

4650613117921 is an equidigital number, since it uses as much as digits as its factorization.

4650613117921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 4650613117921 in words is "four trillion, six hundred fifty billion, six hundred thirteen million, one hundred seventeen thousand, nine hundred twenty-one".