4638390971617 has 16 divisors (see below), whose sum is σ = 5212496112768. Its totient is φ = 4095338353920.

The previous prime is 4638390971519. The next prime is 4638390971651. The reversal of 4638390971617 is 7161790938364.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4638390971617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4638390971317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14360617 + ... + 14680057.

It is an arithmetic number, because the mean of its divisors is an integer number (325781007048).

Almost surely, 2^{4638390971617} is an apocalyptic number.

It is an amenable number.

4638390971617 is a deficient number, since it is larger than the sum of its proper divisors (574105141151).

4638390971617 is a wasteful number, since it uses less digits than its factorization.

4638390971617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368040.

The product of its (nonzero) digits is 41150592, while the sum is 64.

The spelling of 4638390971617 in words is "four trillion, six hundred thirty-eight billion, three hundred ninety million, nine hundred seventy-one thousand, six hundred seventeen".