743221244550457 has 4 divisors (see below), whose sum is σ = 744898944877200. Its totient is φ = 741543544223716.

The previous prime is 743221244550427. The next prime is 743221244550467. The reversal of 743221244550457 is 754055442122347.

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 a de Polignac number, because none of the positive numbers 2^k-743221244550457 is a prime.

It is a super-2 number, since 2×743221244550457² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 743221244550398 and 743221244550407.

It is not an unprimeable number, because it can be changed into a prime (743221244550427) 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, 838850162707 + ... + 838850163592.

It is an arithmetic number, because the mean of its divisors is an integer number (186224736219300).

Almost surely, 2^{743221244550457} is an apocalyptic number.

It is an amenable number.

743221244550457 is a deficient number, since it is larger than the sum of its proper divisors (1677700326743).

743221244550457 is a wasteful number, since it uses less digits than its factorization.

743221244550457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677700326742.

The product of its (nonzero) digits is 37632000, while the sum is 55.

The spelling of 743221244550457 in words is "seven hundred forty-three trillion, two hundred twenty-one billion, two hundred forty-four million, five hundred fifty thousand, four hundred fifty-seven".