118812100009 has 2 divisors, whose sum is σ = 118812100010. Its totient is φ = 118812100008.

The previous prime is 118812099979. The next prime is 118812100091. The reversal of 118812100009 is 900001218811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111908982784 + 6903117225 = 334528^2 + 83085^2 .

It is a cyclic number.

It is not a de Polignac number, because 118812100009 - 2¹¹ = 118812097961 is a prime.

It is not a weakly prime, because it can be changed into another prime (118812100409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59406050004 + 59406050005.

It is an arithmetic number, because the mean of its divisors is an integer number (59406050005).

Almost surely, 2^118812100009 is an apocalyptic number.

It is an amenable number.

118812100009 is a deficient number, since it is larger than the sum of its proper divisors (1).

118812100009 is an equidigital number, since it uses as much as digits as its factorization.

118812100009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 31.

The spelling of 118812100009 in words is "one hundred eighteen billion, eight hundred twelve million, one hundred thousand, nine".