729540620844 has 96 divisors (see below), whose sum is σ = 2030583582720. Its totient is φ = 199322806848.

The previous prime is 729540620819. The next prime is 729540620869. The reversal of 729540620844 is 448026045927.

It is an interprime number because it is at equal distance from previous prime (729540620819) and next prime (729540620869).

It is a super-2 number, since 2×729540620844² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7251067 + ... + 7350989.

It is an arithmetic number, because the mean of its divisors is an integer number (21151912320).

Almost surely, 2^729540620844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 729540620844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1015291791360).

729540620844 is an abundant number, since it is smaller than the sum of its proper divisors (1301042961876).

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

729540620844 is a wasteful number, since it uses less digits than its factorization.

729540620844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103739 (or 103737 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 729540620844 in words is "seven hundred twenty-nine billion, five hundred forty million, six hundred twenty thousand, eight hundred forty-four".