385854655633 has 2 divisors, whose sum is σ = 385854655634. Its totient is φ = 385854655632.

The previous prime is 385854655567. The next prime is 385854655651. The reversal of 385854655633 is 336556458583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 382113131409 + 3741524224 = 618153^2 + 61168^2 .

It is an emirp because it is prime and its reverse (336556458583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 385854655633 - 2²⁹ = 385317784721 is a prime.

It is a super-2 number, since 2×385854655633² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (385854655663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192927327816 + 192927327817.

It is an arithmetic number, because the mean of its divisors is an integer number (192927327817).

Almost surely, 2^385854655633 is an apocalyptic number.

It is an amenable number.

385854655633 is a deficient number, since it is larger than the sum of its proper divisors (1).

385854655633 is an equidigital number, since it uses as much as digits as its factorization.

385854655633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520000, while the sum is 61.

The spelling of 385854655633 in words is "three hundred eighty-five billion, eight hundred fifty-four million, six hundred fifty-five thousand, six hundred thirty-three".