385655556583 has 16 divisors (see below), whose sum is σ = 425401879680. Its totient is φ = 346711528800.

The previous prime is 385655556553. The next prime is 385655556619.

It is a happy number.

385655556583 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 385655556583 - 2¹⁷ = 385655425511 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 (385655556553) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 164773 + ... + 893566.

It is an arithmetic number, because the mean of its divisors is an integer number (26587617480).

Almost surely, 2^385655556583 is an apocalyptic number.

385655556583 is a deficient number, since it is larger than the sum of its proper divisors (39746323097).

385655556583 is a wasteful number, since it uses less digits than its factorization.

385655556583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058718.

The product of its digits is 324000000, while the sum is 64.

The spelling of 385655556583 in words is "three hundred eighty-five billion, six hundred fifty-five million, five hundred fifty-six thousand, five hundred eighty-three".