121648031548 has 24 divisors (see below), whose sum is σ = 214116503328. Its totient is φ = 60472667136.

The previous prime is 121648031521. The next prime is 121648031551. The reversal of 121648031548 is 845130846121.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 530265 + ... + 724207.

It is an arithmetic number, because the mean of its divisors is an integer number (8921520972).

Almost surely, 2^121648031548 is an apocalyptic number.

It is an amenable number.

121648031548 is a deficient number, since it is larger than the sum of its proper divisors (92468471780).

121648031548 is a wasteful number, since it uses less digits than its factorization.

121648031548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194853 (or 194851 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

Adding to 121648031548 its reverse (845130846121), we get a palindrome (966778877669).

The spelling of 121648031548 in words is "one hundred twenty-one billion, six hundred forty-eight million, thirty-one thousand, five hundred forty-eight".