121453532608 has 56 divisors (see below), whose sum is σ = 243563241600. Its totient is φ = 60084680448.

The previous prime is 121453532597. The next prime is 121453532617. The reversal of 121453532608 is 806235354121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5734903 + ... + 5756041.

It is an arithmetic number, because the mean of its divisors is an integer number (4349343600).

Almost surely, 2^121453532608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121453532608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121781620800).

121453532608 is an abundant number, since it is smaller than the sum of its proper divisors (122109708992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121453532608 is a wasteful number, since it uses less digits than its factorization.

121453532608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22097 (or 22087 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

Adding to 121453532608 its reverse (806235354121), we get a palindrome (927688886729).

The spelling of 121453532608 in words is "one hundred twenty-one billion, four hundred fifty-three million, five hundred thirty-two thousand, six hundred eight".