6616122617827 has 2 divisors, whose sum is σ = 6616122617828. Its totient is φ = 6616122617826.

The previous prime is 6616122617807. The next prime is 6616122617857. The reversal of 6616122617827 is 7287162216166.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6616122617827 is a prime.

It is not a weakly prime, because it can be changed into another prime (6616122617807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3308061308913 + 3308061308914.

It is an arithmetic number, because the mean of its divisors is an integer number (3308061308914).

Almost surely, 2^{6616122617827} is an apocalyptic number.

6616122617827 is a deficient number, since it is larger than the sum of its proper divisors (1).

6616122617827 is an equidigital number, since it uses as much as digits as its factorization.

6616122617827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 55.

The spelling of 6616122617827 in words is "six trillion, six hundred sixteen billion, one hundred twenty-two million, six hundred seventeen thousand, eight hundred twenty-seven".