120640691486279 has 2 divisors, whose sum is σ = 120640691486280. Its totient is φ = 120640691486278.

The previous prime is 120640691486257. The next prime is 120640691486281. The reversal of 120640691486279 is 972684196046021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 120640691486279 - 2¹² = 120640691482183 is a prime.

It is a Sophie Germain prime.

Together with 120640691486281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150640691486279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60320345743139 + 60320345743140.

It is an arithmetic number, because the mean of its divisors is an integer number (60320345743140).

Almost surely, 2^{120640691486279} is an apocalyptic number.

120640691486279 is a deficient number, since it is larger than the sum of its proper divisors (1).

120640691486279 is an equidigital number, since it uses as much as digits as its factorization.

120640691486279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62705664, while the sum is 65.

The spelling of 120640691486279 in words is "one hundred twenty trillion, six hundred forty billion, six hundred ninety-one million, four hundred eighty-six thousand, two hundred seventy-nine".