121761323659 has 2 divisors, whose sum is σ = 121761323660. Its totient is φ = 121761323658.

The previous prime is 121761323647. The next prime is 121761323681. The reversal of 121761323659 is 956323167121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121761323659 - 2⁹ = 121761323147 is a prime.

It is not a weakly prime, because it can be changed into another prime (121761323609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60880661829 + 60880661830.

It is an arithmetic number, because the mean of its divisors is an integer number (60880661830).

Almost surely, 2^121761323659 is an apocalyptic number.

121761323659 is a deficient number, since it is larger than the sum of its proper divisors (1).

121761323659 is an equidigital number, since it uses as much as digits as its factorization.

121761323659 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 46.

The spelling of 121761323659 in words is "one hundred twenty-one billion, seven hundred sixty-one million, three hundred twenty-three thousand, six hundred fifty-nine".