729782021106 has 12 divisors (see below), whose sum is σ = 1581194379102. Its totient is φ = 243260673696.

The previous prime is 729782021081. The next prime is 729782021119. The reversal of 729782021106 is 601120287927.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 466228130481 + 263553890625 = 682809^2 + 513375^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20271722791 + ... + 20271722826.

Almost surely, 2^729782021106 is an apocalyptic number.

729782021106 is an abundant number, since it is smaller than the sum of its proper divisors (851412357996).

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

729782021106 is a wasteful number, since it uses less digits than its factorization.

729782021106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40543445625 (or 40543445622 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 729782021106 in words is "seven hundred twenty-nine billion, seven hundred eighty-two million, twenty-one thousand, one hundred six".