818870218007 has 2 divisors, whose sum is σ = 818870218008. Its totient is φ = 818870218006.

The previous prime is 818870217941. The next prime is 818870218037. The reversal of 818870218007 is 700812078818.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 818870218007 - 2²⁰ = 818869169431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (818870218037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409435109003 + 409435109004.

It is an arithmetic number, because the mean of its divisors is an integer number (409435109004).

Almost surely, 2^818870218007 is an apocalyptic number.

818870218007 is a deficient number, since it is larger than the sum of its proper divisors (1).

818870218007 is an equidigital number, since it uses as much as digits as its factorization.

818870218007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 401408, while the sum is 50.

The spelling of 818870218007 in words is "eight hundred eighteen billion, eight hundred seventy million, two hundred eighteen thousand, seven".