729422730451081 has 32 divisors (see below), whose sum is σ = 774187845350400. Its totient is φ = 686234690729280.

The previous prime is 729422730451067. The next prime is 729422730451111. The reversal of 729422730451081 is 180154037224927.

It is a cyclic number.

It is not a de Polignac number, because 729422730451081 - 2²³ = 729422722062473 is a prime.

It is a super-2 number, since 2×729422730451081² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (729422730452081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61367940 + ... + 72283258.

It is an arithmetic number, because the mean of its divisors is an integer number (24193370167200).

Almost surely, 2^{729422730451081} is an apocalyptic number.

It is an amenable number.

729422730451081 is a deficient number, since it is larger than the sum of its proper divisors (44765114899319).

729422730451081 is a wasteful number, since it uses less digits than its factorization.

729422730451081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10915789.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 729422730451081 in words is "seven hundred twenty-nine trillion, four hundred twenty-two billion, seven hundred thirty million, four hundred fifty-one thousand, eighty-one".