729465836842 has 8 divisors (see below), whose sum is σ = 1094224353732. Its totient is φ = 364724385600.

The previous prime is 729465836797. The next prime is 729465836851. The reversal of 729465836842 is 248638564927.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 721478661201 + 7987175641 = 849399^2 + 89371^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4159009 + ... + 4330852.

Almost surely, 2^729465836842 is an apocalyptic number.

729465836842 is a deficient number, since it is larger than the sum of its proper divisors (364758516890).

729465836842 is a wasteful number, since it uses less digits than its factorization.

729465836842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8532824.

The product of its digits is 139345920, while the sum is 64.

The spelling of 729465836842 in words is "seven hundred twenty-nine billion, four hundred sixty-five million, eight hundred thirty-six thousand, eight hundred forty-two".