729673918251 has 8 divisors (see below), whose sum is σ = 974696893584. Its totient is φ = 485550110880.

The previous prime is 729673918223. The next prime is 729673918291. The reversal of 729673918251 is 152819376927.

It is a happy number.

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

It is not a de Polignac number, because 729673918251 - 2⁷ = 729673918123 is a prime.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (729673918291) 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 7 ways as a sum of consecutive naturals, for example, 224790096 + ... + 224793341.

It is an arithmetic number, because the mean of its divisors is an integer number (121837111698).

Almost surely, 2^729673918251 is an apocalyptic number.

729673918251 is a deficient number, since it is larger than the sum of its proper divisors (245022975333).

729673918251 is a wasteful number, since it uses less digits than its factorization.

729673918251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449583981.

The product of its digits is 11430720, while the sum is 60.

The spelling of 729673918251 in words is "seven hundred twenty-nine billion, six hundred seventy-three million, nine hundred eighteen thousand, two hundred fifty-one".