239657316557 has 8 divisors (see below), whose sum is σ = 239905610784. Its totient is φ = 239409120688.

The previous prime is 239657316517. The next prime is 239657316589. The reversal of 239657316557 is 755613756932.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 239657316557 - 2¹⁶ = 239657251021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 239657316496 and 239657316505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239657316517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5473283 + ... + 5516895.

It is an arithmetic number, because the mean of its divisors is an integer number (29988201348).

Almost surely, 2^239657316557 is an apocalyptic number.

It is an amenable number.

239657316557 is a deficient number, since it is larger than the sum of its proper divisors (248294227).

239657316557 is a wasteful number, since it uses less digits than its factorization.

239657316557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49179.

The product of its digits is 35721000, while the sum is 59.

The spelling of 239657316557 in words is "two hundred thirty-nine billion, six hundred fifty-seven million, three hundred sixteen thousand, five hundred fifty-seven".