121752434451 has 8 divisors (see below), whose sum is σ = 162519600384. Its totient is φ = 81076779080.

The previous prime is 121752434449. The next prime is 121752434477. The reversal of 121752434451 is 154434257121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121752434451 - 2¹ = 121752434449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121752430451) by changing a digit.

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, 22874535 + ... + 22879856.

It is an arithmetic number, because the mean of its divisors is an integer number (20314950048).

Almost surely, 2^121752434451 is an apocalyptic number.

121752434451 is a deficient number, since it is larger than the sum of its proper divisors (40767165933).

121752434451 is an equidigital number, since it uses as much as digits as its factorization.

121752434451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45755281.

The product of its digits is 134400, while the sum is 39.

The spelling of 121752434451 in words is "one hundred twenty-one billion, seven hundred fifty-two million, four hundred thirty-four thousand, four hundred fifty-one".