121752404544 has 56 divisors (see below), whose sum is σ = 322520950080. Its totient is φ = 40535709184.

The previous prime is 121752404519. The next prime is 121752404651. The reversal of 121752404544 is 445404257121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216819 + ... + 538994.

It is an arithmetic number, because the mean of its divisors is an integer number (5759302680).

Almost surely, 2^121752404544 is an apocalyptic number.

It is an amenable number.

121752404544 is an abundant number, since it is smaller than the sum of its proper divisors (200768545536).

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

121752404544 is an equidigital number, since it uses as much as digits as its factorization.

121752404544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756667 (or 756657 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 39.

The spelling of 121752404544 in words is "one hundred twenty-one billion, seven hundred fifty-two million, four hundred four thousand, five hundred forty-four".