121755142274735 has 4 divisors (see below), whose sum is σ = 146106170729688. Its totient is φ = 97404113819784.

The previous prime is 121755142274687. The next prime is 121755142274807. The reversal of 121755142274735 is 537472241557121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121755142274735 - 2¹⁰ = 121755142273711 is a prime.

It is a super-3 number, since 3×121755142274735³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12175514227469 + ... + 12175514227478.

It is an arithmetic number, because the mean of its divisors is an integer number (36526542682422).

Almost surely, 2^{121755142274735} is an apocalyptic number.

121755142274735 is a deficient number, since it is larger than the sum of its proper divisors (24351028454953).

121755142274735 is an equidigital number, since it uses as much as digits as its factorization.

121755142274735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24351028454952.

The product of its digits is 16464000, while the sum is 56.

The spelling of 121755142274735 in words is "one hundred twenty-one trillion, seven hundred fifty-five billion, one hundred forty-two million, two hundred seventy-four thousand, seven hundred thirty-five".