729740153561 has 16 divisors (see below), whose sum is σ = 773541382080. Its totient is φ = 687565454400.

The previous prime is 729740153537. The next prime is 729740153573. The reversal of 729740153561 is 165351047927.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-729740153561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (729740153531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2348390 + ... + 2640911.

It is an arithmetic number, because the mean of its divisors is an integer number (48346336380).

Almost surely, 2^729740153561 is an apocalyptic number.

It is an amenable number.

729740153561 is a deficient number, since it is larger than the sum of its proper divisors (43801228519).

729740153561 is a wasteful number, since it uses less digits than its factorization.

729740153561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4989464.

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 729740153561 in words is "seven hundred twenty-nine billion, seven hundred forty million, one hundred fifty-three thousand, five hundred sixty-one".