121274645853 has 8 divisors (see below), whose sum is σ = 161768610016. Its totient is φ = 80815222800.

The previous prime is 121274645839. The next prime is 121274645879. The reversal of 121274645853 is 358546472121.

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

It is not a de Polignac number, because 121274645853 - 2²¹ = 121272548701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121274645803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8627083 + ... + 8641128.

It is an arithmetic number, because the mean of its divisors is an integer number (20221076252).

Almost surely, 2^121274645853 is an apocalyptic number.

It is an amenable number.

121274645853 is a deficient number, since it is larger than the sum of its proper divisors (40493964163).

121274645853 is a wasteful number, since it uses less digits than its factorization.

121274645853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17270555.

The product of its digits is 1612800, while the sum is 48.

The spelling of 121274645853 in words is "one hundred twenty-one billion, two hundred seventy-four million, six hundred forty-five thousand, eight hundred fifty-three".