216070666807 has 2 divisors, whose sum is σ = 216070666808. Its totient is φ = 216070666806.

The previous prime is 216070666781. The next prime is 216070666813. The reversal of 216070666807 is 708666070612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216070666807 - 2³⁵ = 181710928439 is a prime.

It is a super-2 number, since 2×216070666807² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216070666817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108035333403 + 108035333404.

It is an arithmetic number, because the mean of its divisors is an integer number (108035333404).

Almost surely, 2^216070666807 is an apocalyptic number.

216070666807 is a deficient number, since it is larger than the sum of its proper divisors (1).

216070666807 is an equidigital number, since it uses as much as digits as its factorization.

216070666807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 216070666807 in words is "two hundred sixteen billion, seventy million, six hundred sixty-six thousand, eight hundred seven".