121752404515 has 16 divisors (see below), whose sum is σ = 174234498048. Its totient is φ = 79857477216.

The previous prime is 121752404503. The next prime is 121752404519. The reversal of 121752404515 is 515404257121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121752404515 - 2¹⁷ = 121752273443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121752404519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75621807 + ... + 75623416.

It is an arithmetic number, because the mean of its divisors is an integer number (10889656128).

Almost surely, 2^121752404515 is an apocalyptic number.

121752404515 is a deficient number, since it is larger than the sum of its proper divisors (52482093533).

121752404515 is a wasteful number, since it uses less digits than its factorization.

121752404515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151245258.

The product of its (nonzero) digits is 56000, while the sum is 37.

The spelling of 121752404515 in words is "one hundred twenty-one billion, seven hundred fifty-two million, four hundred four thousand, five hundred fifteen".