16634030641 has 2 divisors, whose sum is σ = 16634030642. Its totient is φ = 16634030640.

The previous prime is 16634030599. The next prime is 16634030659. The reversal of 16634030641 is 14603043661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16414990641 + 219040000 = 128121^2 + 14800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16634030641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16634030597 and 16634030606.

It is not a weakly prime, because it can be changed into another prime (16664030641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8317015320 + 8317015321.

It is an arithmetic number, because the mean of its divisors is an integer number (8317015321).

Almost surely, 2^16634030641 is an apocalyptic number.

It is an amenable number.

16634030641 is a deficient number, since it is larger than the sum of its proper divisors (1).

16634030641 is an equidigital number, since it uses as much as digits as its factorization.

16634030641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 34.

It can be divided in two parts, 1663 and 4030641, that added together give a palindrome (4032304).

The spelling of 16634030641 in words is "sixteen billion, six hundred thirty-four million, thirty thousand, six hundred forty-one".