121706366495 has 16 divisors (see below), whose sum is σ = 168922575360. Its totient is φ = 82450300704.

The previous prime is 121706366491. The next prime is 121706366497. The reversal of 121706366495 is 594663607121.

It is a cyclic number.

It is not a de Polignac number, because 121706366495 - 2² = 121706366491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121706366491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20944835 + ... + 20950644.

It is an arithmetic number, because the mean of its divisors is an integer number (10557660960).

Almost surely, 2^121706366495 is an apocalyptic number.

121706366495 is a deficient number, since it is larger than the sum of its proper divisors (47216208865).

121706366495 is an equidigital number, since it uses as much as digits as its factorization.

121706366495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41895574.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 121706366495 in words is "one hundred twenty-one billion, seven hundred six million, three hundred sixty-six thousand, four hundred ninety-five".