744151243546121 has 4 divisors (see below), whose sum is σ = 744230653569744. Its totient is φ = 744071833522500.

The previous prime is 744151243546091. The next prime is 744151243546157. The reversal of 744151243546121 is 121645342151447.

744151243546121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 744151243546121 - 2³⁴ = 744134063676937 is a prime.

It is a super-2 number, since 2×744151243546121² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 744151243546121.

It is not an unprimeable number, because it can be changed into a prime (744151243543121) 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, 39704997755 + ... + 39705016496.

It is an arithmetic number, because the mean of its divisors is an integer number (186057663392436).

Almost surely, 2^{744151243546121} is an apocalyptic number.

It is an amenable number.

744151243546121 is a deficient number, since it is larger than the sum of its proper divisors (79410023623).

744151243546121 is an equidigital number, since it uses as much as digits as its factorization.

744151243546121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79410023622.

The product of its digits is 3225600, while the sum is 50.

Adding to 744151243546121 its reverse (121645342151447), we get a palindrome (865796585697568).

The spelling of 744151243546121 in words is "seven hundred forty-four trillion, one hundred fifty-one billion, two hundred forty-three million, five hundred forty-six thousand, one hundred twenty-one".