729255628164 has 144 divisors (see below), whose sum is σ = 2121638863232. Its totient is φ = 190802055168.

The previous prime is 729255628133. The next prime is 729255628217. The reversal of 729255628164 is 461826552927.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 492264 + ... + 1304160.

Almost surely, 2^729255628164 is an apocalyptic number.

729255628164 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 729255628164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1060819431616).

729255628164 is an abundant number, since it is smaller than the sum of its proper divisors (1392383235068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

729255628164 is a wasteful number, since it uses less digits than its factorization.

729255628164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811982 (or 811963 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 57.

The spelling of 729255628164 in words is "seven hundred twenty-nine billion, two hundred fifty-five million, six hundred twenty-eight thousand, one hundred sixty-four".