385566319423 has 4 divisors (see below), whose sum is σ = 386351587368. Its totient is φ = 384781051480.

The previous prime is 385566319421. The next prime is 385566319429. The reversal of 385566319423 is 324913665583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324913665583 = 13 ⋅24993358891.

It is a cyclic number.

It is not a de Polignac number, because 385566319423 - 2¹ = 385566319421 is a prime.

It is a super-2 number, since 2×385566319423² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385566319421) 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, 392633236 + ... + 392634217.

It is an arithmetic number, because the mean of its divisors is an integer number (96587896842).

Almost surely, 2^385566319423 is an apocalyptic number.

385566319423 is a deficient number, since it is larger than the sum of its proper divisors (785267945).

385566319423 is an equidigital number, since it uses as much as digits as its factorization.

385566319423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785267944.

The product of its digits is 13996800, while the sum is 55.

The spelling of 385566319423 in words is "three hundred eighty-five billion, five hundred sixty-six million, three hundred nineteen thousand, four hundred twenty-three".