121648031623 has 2 divisors, whose sum is σ = 121648031624. Its totient is φ = 121648031622.

The previous prime is 121648031551. The next prime is 121648031629. The reversal of 121648031623 is 326130846121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121648031623 - 2¹⁷ = 121647900551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121648031629) 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, 60824015811 + 60824015812.

It is an arithmetic number, because the mean of its divisors is an integer number (60824015812).

Almost surely, 2^121648031623 is an apocalyptic number.

121648031623 is a deficient number, since it is larger than the sum of its proper divisors (1).

121648031623 is an equidigital number, since it uses as much as digits as its factorization.

121648031623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

Adding to 121648031623 its reverse (326130846121), we get a palindrome (447778877744).

The spelling of 121648031623 in words is "one hundred twenty-one billion, six hundred forty-eight million, thirty-one thousand, six hundred twenty-three".