118840670621 has 2 divisors, whose sum is σ = 118840670622. Its totient is φ = 118840670620.

The previous prime is 118840670609. The next prime is 118840670623. The reversal of 118840670621 is 126076048811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107692267225 + 11148403396 = 328165^2 + 105586^2 .

It is a cyclic number.

It is not a de Polignac number, because 118840670621 - 2¹⁴ = 118840654237 is a prime.

It is a Sophie Germain prime.

Together with 118840670623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118840670623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59420335310 + 59420335311.

It is an arithmetic number, because the mean of its divisors is an integer number (59420335311).

Almost surely, 2^118840670621 is an apocalyptic number.

It is an amenable number.

118840670621 is a deficient number, since it is larger than the sum of its proper divisors (1).

118840670621 is an equidigital number, since it uses as much as digits as its factorization.

118840670621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 118840670621 in words is "one hundred eighteen billion, eight hundred forty million, six hundred seventy thousand, six hundred twenty-one".