16620247376827 has 2 divisors, whose sum is σ = 16620247376828. Its totient is φ = 16620247376826.

The previous prime is 16620247376801. The next prime is 16620247376921. The reversal of 16620247376827 is 72867374202661.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16620247376827 is a prime.

It is not a weakly prime, because it can be changed into another prime (16620247370827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8310123688413 + 8310123688414.

It is an arithmetic number, because the mean of its divisors is an integer number (8310123688414).

Almost surely, 2^{16620247376827} is an apocalyptic number.

16620247376827 is a deficient number, since it is larger than the sum of its proper divisors (1).

16620247376827 is an equidigital number, since it uses as much as digits as its factorization.

16620247376827 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56899584, while the sum is 61.

The spelling of 16620247376827 in words is "sixteen trillion, six hundred twenty billion, two hundred forty-seven million, three hundred seventy-six thousand, eight hundred twenty-seven".