743245356761 has 2 divisors, whose sum is σ = 743245356762. Its totient is φ = 743245356760.

The previous prime is 743245356743. The next prime is 743245356823. The reversal of 743245356761 is 167653542347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 743242273225 + 3083536 = 862115^2 + 1756^2 .

It is a cyclic number.

It is not a de Polignac number, because 743245356761 - 2²⁶ = 743178247897 is a prime.

It is a super-2 number, since 2×743245356761² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (743245356461) 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 as a sum of consecutive naturals, namely, 371622678380 + 371622678381.

It is an arithmetic number, because the mean of its divisors is an integer number (371622678381).

Almost surely, 2^743245356761 is an apocalyptic number.

It is an amenable number.

743245356761 is a deficient number, since it is larger than the sum of its proper divisors (1).

743245356761 is an equidigital number, since it uses as much as digits as its factorization.

743245356761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12700800, while the sum is 53.

The spelling of 743245356761 in words is "seven hundred forty-three billion, two hundred forty-five million, three hundred fifty-six thousand, seven hundred sixty-one".