743485409537 has 4 divisors (see below), whose sum is σ = 800676594900. Its totient is φ = 686294224176.

The previous prime is 743485409531. The next prime is 743485409543. The reversal of 743485409537 is 735904584347.

It is a Cunningham number, because it is equal to 862256²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 735904584347 = 31847 ⋅23107501.

It is an interprime number because it is at equal distance from previous prime (743485409531) and next prime (743485409543).

It can be written as a sum of positive squares in 2 ways, for example, as 109982436496 + 633502973041 = 331636^2 + 795929^2 .

It is a cyclic number.

It is not a de Polignac number, because 743485409537 - 2⁶ = 743485409473 is a prime.

It is a super-2 number, since 2×743485409537² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (743485409531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28595592662 + ... + 28595592687.

It is an arithmetic number, because the mean of its divisors is an integer number (200169148725).

Almost surely, 2^743485409537 is an apocalyptic number.

It is an amenable number.

743485409537 is a deficient number, since it is larger than the sum of its proper divisors (57191185363).

743485409537 is a wasteful number, since it uses less digits than its factorization.

743485409537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57191185362.

The product of its (nonzero) digits is 50803200, while the sum is 59.

The spelling of 743485409537 in words is "seven hundred forty-three billion, four hundred eighty-five million, four hundred nine thousand, five hundred thirty-seven".