320657568135 has 32 divisors (see below), whose sum is σ = 524919813120. Its totient is φ = 167088475008.

The previous prime is 320657568097. The next prime is 320657568139. The reversal of 320657568135 is 531865756023.

It is not a de Polignac number, because 320657568135 - 2³² = 316362600839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320657568139) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 653809 + ... + 1033818.

It is an arithmetic number, because the mean of its divisors is an integer number (16403744160).

Almost surely, 2^320657568135 is an apocalyptic number.

320657568135 is a deficient number, since it is larger than the sum of its proper divisors (204262244985).

320657568135 is a wasteful number, since it uses less digits than its factorization.

320657568135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687927.

The product of its (nonzero) digits is 4536000, while the sum is 51.

The spelling of 320657568135 in words is "three hundred twenty billion, six hundred fifty-seven million, five hundred sixty-eight thousand, one hundred thirty-five".