121541363659 has 2 divisors, whose sum is σ = 121541363660. Its totient is φ = 121541363658.

The previous prime is 121541363621. The next prime is 121541363719. The reversal of 121541363659 is 956363145121.

It is a weak prime.

It is an emirp because it is prime and its reverse (956363145121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121541363659 - 2¹⁵ = 121541330891 is a prime.

It is not a weakly prime, because it can be changed into another prime (121541361659) 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 as a sum of consecutive naturals, namely, 60770681829 + 60770681830.

It is an arithmetic number, because the mean of its divisors is an integer number (60770681830).

Almost surely, 2^121541363659 is an apocalyptic number.

121541363659 is a deficient number, since it is larger than the sum of its proper divisors (1).

121541363659 is an equidigital number, since it uses as much as digits as its factorization.

121541363659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The spelling of 121541363659 in words is "one hundred twenty-one billion, five hundred forty-one million, three hundred sixty-three thousand, six hundred fifty-nine".