728162245345 has 32 divisors (see below), whose sum is σ = 903992452128. Its totient is φ = 562635859968.

The previous prime is 728162245339. The next prime is 728162245351. The reversal of 728162245345 is 543542261827.

It is an interprime number because it is at equal distance from previous prime (728162245339) and next prime (728162245351).

It can be written as a sum of positive squares in 16 ways, for example, as 14907677409 + 713254567936 = 122097^2 + 844544^2 .

It is a cyclic number.

It is not a de Polignac number, because 728162245345 - 2³ = 728162245337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31734717 + ... + 31757653.

It is an arithmetic number, because the mean of its divisors is an integer number (28249764129).

Almost surely, 2^728162245345 is an apocalyptic number.

It is an amenable number.

728162245345 is a deficient number, since it is larger than the sum of its proper divisors (175830206783).

728162245345 is a wasteful number, since it uses less digits than its factorization.

728162245345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24229.

The product of its digits is 3225600, while the sum is 49.

The spelling of 728162245345 in words is "seven hundred twenty-eight billion, one hundred sixty-two million, two hundred forty-five thousand, three hundred forty-five".