121144443768757 has 4 divisors (see below), whose sum is σ = 121149531116460. Its totient is φ = 121139356421056.

The previous prime is 121144443768749. The next prime is 121144443768773. The reversal of 121144443768757 is 757867344441121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43624888947396 + 77519554821361 = 6604914^2 + 8804519^2 .

It is a cyclic number.

It is not a de Polignac number, because 121144443768757 - 2³ = 121144443768749 is a prime.

It is a super-3 number, since 3×121144443768757³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121144443768727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2543638132 + ... + 2543685757.

It is an arithmetic number, because the mean of its divisors is an integer number (30287382779115).

Almost surely, 2^{121144443768757} is an apocalyptic number.

It is an amenable number.

121144443768757 is a deficient number, since it is larger than the sum of its proper divisors (5087347703).

121144443768757 is an equidigital number, since it uses as much as digits as its factorization.

121144443768757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5087347702.

The product of its digits is 126443520, while the sum is 64.

The spelling of 121144443768757 in words is "one hundred twenty-one trillion, one hundred forty-four billion, four hundred forty-three million, seven hundred sixty-eight thousand, seven hundred fifty-seven".