730445724420061 has 4 divisors (see below), whose sum is σ = 786633857067772. Its totient is φ = 674257591772352.

The previous prime is 730445724420043. The next prime is 730445724420101. The reversal of 730445724420061 is 160024427544037.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 261329371519225 + 469116352900836 = 16165685^2 + 21659094^2 .

It is a cyclic number.

It is not a de Polignac number, because 730445724420061 - 2¹¹ = 730445724418013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 730445724419987 and 730445724420014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730445724420661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28094066323836 + ... + 28094066323861.

It is an arithmetic number, because the mean of its divisors is an integer number (196658464266943).

Almost surely, 2^{730445724420061} is an apocalyptic number.

It is an amenable number.

730445724420061 is a deficient number, since it is larger than the sum of its proper divisors (56188132647711).

730445724420061 is a wasteful number, since it uses less digits than its factorization.

730445724420061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56188132647710.

The product of its (nonzero) digits is 4515840, while the sum is 49.

The spelling of 730445724420061 in words is "seven hundred thirty trillion, four hundred forty-five billion, seven hundred twenty-four million, four hundred twenty thousand, sixty-one".