320563768319928 has 192 divisors, whose sum is σ = 1025416594238400. Its totient is φ = 88564994703360.

The previous prime is 320563768319897. The next prime is 320563768319933. The reversal of 320563768319928 is 829913867365023.

320563768319928 is a `hidden beast` number, since 3 + 2 + 0 + 563 + 7 + 6 + 8 + 31 + 9 + 9 + 28 = 666.

It is a super-2 number, since 2×320563768319928² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66307233 + ... + 70977296.

It is an arithmetic number, because the mean of its divisors is an integer number (5340711428325).

Almost surely, 2^{320563768319928} is an apocalyptic number.

It is an amenable number.

320563768319928 is an abundant number, since it is smaller than the sum of its proper divisors (704852825918472).

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

320563768319928 is a wasteful number, since it uses less digits than its factorization.

320563768319928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137284702 (or 137284695 counting only the distinct ones).

The product of its (nonzero) digits is 705438720, while the sum is 72.

The spelling of 320563768319928 in words is "three hundred twenty trillion, five hundred sixty-three billion, seven hundred sixty-eight million, three hundred nineteen thousand, nine hundred twenty-eight".