121344254054544 has 40 divisors (see below), whose sum is σ = 314006681348640. Its totient is φ = 40379178227968.

The previous prime is 121344254054533. The next prime is 121344254054567. The reversal of 121344254054544 is 445450452443121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 121344254054493 and 121344254054502.

It is an unprimeable number.

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, 2153298309 + ... + 2153354660.

It is an arithmetic number, because the mean of its divisors is an integer number (7850167033716).

Almost surely, 2^{121344254054544} is an apocalyptic number.

It is an amenable number.

121344254054544 is an abundant number, since it is smaller than the sum of its proper divisors (192662427294096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121344254054544 is a wasteful number, since it uses less digits than its factorization.

121344254054544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306653567 (or 4306653561 counting only the distinct ones).

The product of its (nonzero) digits is 6144000, while the sum is 48.

The spelling of 121344254054544 in words is "one hundred twenty-one trillion, three hundred forty-four billion, two hundred fifty-four million, fifty-four thousand, five hundred forty-four".