385555116621 has 32 divisors (see below), whose sum is σ = 544727462400. Its totient is φ = 241892516160.

The previous prime is 385555116619. The next prime is 385555116673. The reversal of 385555116621 is 126611555583.

It is not a de Polignac number, because 385555116621 - 2¹ = 385555116619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385555116421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9887655 + ... + 9926571.

It is an arithmetic number, because the mean of its divisors is an integer number (17022733200).

Almost surely, 2^385555116621 is an apocalyptic number.

It is an amenable number.

385555116621 is a deficient number, since it is larger than the sum of its proper divisors (159172345779).

385555116621 is a wasteful number, since it uses less digits than its factorization.

385555116621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40089.

The product of its digits is 1080000, while the sum is 48.

The spelling of 385555116621 in words is "three hundred eighty-five billion, five hundred fifty-five million, one hundred sixteen thousand, six hundred twenty-one".