121615265063 has 2 divisors, whose sum is σ = 121615265064. Its totient is φ = 121615265062.

The previous prime is 121615265027. The next prime is 121615265171. The reversal of 121615265063 is 360562516121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121615265063 - 2²² = 121611070759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121615265963) 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, 60807632531 + 60807632532.

It is an arithmetic number, because the mean of its divisors is an integer number (60807632532).

Almost surely, 2^121615265063 is an apocalyptic number.

121615265063 is a deficient number, since it is larger than the sum of its proper divisors (1).

121615265063 is an equidigital number, since it uses as much as digits as its factorization.

121615265063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 121615265063 in words is "one hundred twenty-one billion, six hundred fifteen million, two hundred sixty-five thousand, sixty-three".