385851050815 has 4 divisors (see below), whose sum is σ = 463021260984. Its totient is φ = 308680840648.

The previous prime is 385851050807. The next prime is 385851050857. The reversal of 385851050815 is 518050158583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 518050158583 = 277 ⋅1870217179.

It is a cyclic number.

It is not a de Polignac number, because 385851050815 - 2³ = 385851050807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38585105077 + ... + 38585105086.

It is an arithmetic number, because the mean of its divisors is an integer number (115755315246).

Almost surely, 2^385851050815 is an apocalyptic number.

385851050815 is a deficient number, since it is larger than the sum of its proper divisors (77170210169).

385851050815 is an equidigital number, since it uses as much as digits as its factorization.

385851050815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77170210168.

The product of its (nonzero) digits is 960000, while the sum is 49.

The spelling of 385851050815 in words is "three hundred eighty-five billion, eight hundred fifty-one million, fifty thousand, eight hundred fifteen".