16601363430761 has 2 divisors, whose sum is σ = 16601363430762. Its totient is φ = 16601363430760.

The previous prime is 16601363430739. The next prime is 16601363430797. The reversal of 16601363430761 is 16703436310661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16177489515625 + 423873915136 = 4022125^2 + 651056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16601363430761 is a prime.

It is not a weakly prime, because it can be changed into another prime (16601363430461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8300681715380 + 8300681715381.

It is an arithmetic number, because the mean of its divisors is an integer number (8300681715381).

Almost surely, 2^{16601363430761} is an apocalyptic number.

It is an amenable number.

16601363430761 is a deficient number, since it is larger than the sum of its proper divisors (1).

16601363430761 is an equidigital number, since it uses as much as digits as its factorization.

16601363430761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 47.

The spelling of 16601363430761 in words is "sixteen trillion, six hundred one billion, three hundred sixty-three million, four hundred thirty thousand, seven hundred sixty-one".