320428605357 has 36 divisors (see below), whose sum is σ = 538483870080. Its totient is φ = 183076003152.

The previous prime is 320428605353. The next prime is 320428605391. The reversal of 320428605357 is 753506824023.

320428605357 is a `hidden beast` number, since 3 + 2 + 0 + 4 + 2 + 8 + 605 + 35 + 7 = 666.

It is not a de Polignac number, because 320428605357 - 2² = 320428605353 is a prime.

It is a super-2 number, since 2×320428605357² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320428605353) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3296194 + ... + 3392012.

It is an arithmetic number, because the mean of its divisors is an integer number (14957885280).

Almost surely, 2^320428605357 is an apocalyptic number.

It is an amenable number.

320428605357 is a deficient number, since it is larger than the sum of its proper divisors (218055264723).

320428605357 is a wasteful number, since it uses less digits than its factorization.

320428605357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103422 (or 103412 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 45.

The spelling of 320428605357 in words is "three hundred twenty billion, four hundred twenty-eight million, six hundred five thousand, three hundred fifty-seven".