385317391657 has 8 divisors (see below), whose sum is σ = 445072495392. Its totient is φ = 329683329600.

The previous prime is 385317391643. The next prime is 385317391703. The reversal of 385317391657 is 756193713583.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385317391657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385317391607) 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, 1030260219 + ... + 1030260592.

It is an arithmetic number, because the mean of its divisors is an integer number (55634061924).

Almost surely, 2^385317391657 is an apocalyptic number.

It is an amenable number.

385317391657 is a deficient number, since it is larger than the sum of its proper divisors (59755103735).

385317391657 is a wasteful number, since it uses less digits than its factorization.

385317391657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2060520839.

The product of its digits is 14288400, while the sum is 58.

The spelling of 385317391657 in words is "three hundred eighty-five billion, three hundred seventeen million, three hundred ninety-one thousand, six hundred fifty-seven".