16287216601 has 2 divisors, whose sum is σ = 16287216602. Its totient is φ = 16287216600.

The previous prime is 16287216599. The next prime is 16287216637. The reversal of 16287216601 is 10661278261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11950862400 + 4336354201 = 109320^2 + 65851^2 .

It is a cyclic number.

It is not a de Polignac number, because 16287216601 - 2¹ = 16287216599 is a prime.

Together with 16287216599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (16287216301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8143608300 + 8143608301.

It is an arithmetic number, because the mean of its divisors is an integer number (8143608301).

Almost surely, 2^16287216601 is an apocalyptic number.

It is an amenable number.

16287216601 is a deficient number, since it is larger than the sum of its proper divisors (1).

16287216601 is an equidigital number, since it uses as much as digits as its factorization.

16287216601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 16287216601 in words is "sixteen billion, two hundred eighty-seven million, two hundred sixteen thousand, six hundred one".