121752335513 has 16 divisors (see below), whose sum is σ = 135619920000. Its totient is φ = 108763775232.

The previous prime is 121752335491. The next prime is 121752335539. The reversal of 121752335513 is 315533257121.

It is not a de Polignac number, because 121752335513 - 2⁶ = 121752335449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121752335543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2063813 + ... + 2121986.

It is an arithmetic number, because the mean of its divisors is an integer number (8476245000).

Almost surely, 2^121752335513 is an apocalyptic number.

It is an amenable number.

121752335513 is a deficient number, since it is larger than the sum of its proper divisors (13867584487).

121752335513 is a wasteful number, since it uses less digits than its factorization.

121752335513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185904.

The product of its digits is 94500, while the sum is 38.

The spelling of 121752335513 in words is "one hundred twenty-one billion, seven hundred fifty-two million, three hundred thirty-five thousand, five hundred thirteen".