385796389557 has 4 divisors (see below), whose sum is σ = 514395186080. Its totient is φ = 257197593036.

The previous prime is 385796389549. The next prime is 385796389571. The reversal of 385796389557 is 755983697583.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 755983697583 = 3 ⋅251994565861.

It is not a de Polignac number, because 385796389557 - 2³ = 385796389549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385796389547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64299398257 + ... + 64299398262.

It is an arithmetic number, because the mean of its divisors is an integer number (128598796520).

Almost surely, 2^385796389557 is an apocalyptic number.

It is an amenable number.

385796389557 is a deficient number, since it is larger than the sum of its proper divisors (128598796523).

385796389557 is a wasteful number, since it uses less digits than its factorization.

385796389557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128598796522.

The product of its digits is 1714608000, while the sum is 75.

The spelling of 385796389557 in words is "three hundred eighty-five billion, seven hundred ninety-six million, three hundred eighty-nine thousand, five hundred fifty-seven".