657570334242 has 16 divisors (see below), whose sum is σ = 1317083277312. Its totient is φ = 218866343280.

The previous prime is 657570334217. The next prime is 657570334247. The reversal of 657570334242 is 242433075756.

It is a junction number, because it is equal to n+sod(n) for n = 657570334191 and 657570334200.

It is not an unprimeable number, because it can be changed into a prime (657570334247) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 80937634 + ... + 80945757.

It is an arithmetic number, because the mean of its divisors is an integer number (82317704832).

Almost surely, 2^657570334242 is an apocalyptic number.

657570334242 is an abundant number, since it is smaller than the sum of its proper divisors (659512943070).

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

657570334242 is a wasteful number, since it uses less digits than its factorization.

657570334242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161884073.

The product of its (nonzero) digits is 4233600, while the sum is 48.

The spelling of 657570334242 in words is "six hundred fifty-seven billion, five hundred seventy million, three hundred thirty-four thousand, two hundred forty-two".