384785123477 has 4 divisors (see below), whose sum is σ = 384793666476. Its totient is φ = 384776580480.

The previous prime is 384785123467. The next prime is 384785123483. The reversal of 384785123477 is 774321587483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 774321587483 = 151 ⋅5127957533.

It can be written as a sum of positive squares in 2 ways, for example, as 311013674596 + 73771448881 = 557686^2 + 271609^2 .

It is a cyclic number.

It is not a de Polignac number, because 384785123477 - 2²² = 384780929173 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 (384785123467) 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, 4203578 + ... + 4294139.

It is an arithmetic number, because the mean of its divisors is an integer number (96198416619).

Almost surely, 2^384785123477 is an apocalyptic number.

It is an amenable number.

384785123477 is a deficient number, since it is larger than the sum of its proper divisors (8542999).

384785123477 is an equidigital number, since it uses as much as digits as its factorization.

384785123477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8542998.

The product of its digits is 31610880, while the sum is 59.

The spelling of 384785123477 in words is "three hundred eighty-four billion, seven hundred eighty-five million, one hundred twenty-three thousand, four hundred seventy-seven".