320154772645 has 16 divisors (see below), whose sum is σ = 406976186160. Its totient is φ = 240944349184.

The previous prime is 320154772603. The next prime is 320154772669. The reversal of 320154772645 is 546277451023.

It can be written as a sum of positive squares in 8 ways, for example, as 5748975684 + 314405796961 = 75822^2 + 560719^2 .

It is a cyclic number.

It is not a de Polignac number, because 320154772645 - 2³⁵ = 285795034277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320154772595 and 320154772604.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 703612 + ... + 1065541.

It is an arithmetic number, because the mean of its divisors is an integer number (25436011635).

Almost surely, 2^320154772645 is an apocalyptic number.

It is an amenable number.

320154772645 is a deficient number, since it is larger than the sum of its proper divisors (86821413515).

320154772645 is a wasteful number, since it uses less digits than its factorization.

320154772645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771304.

The product of its (nonzero) digits is 1411200, while the sum is 46.

The spelling of 320154772645 in words is "three hundred twenty billion, one hundred fifty-four million, seven hundred seventy-two thousand, six hundred forty-five".