385819661671 has 8 divisors (see below), whose sum is σ = 392508307184. Its totient is φ = 379158373440.

The previous prime is 385819661663. The next prime is 385819661681. The reversal of 385819661671 is 176166918583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 385819661671 - 2³ = 385819661663 is a prime.

It is a super-2 number, since 2×385819661671² (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 (385819661681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6810870 + ... + 6867283.

It is an arithmetic number, because the mean of its divisors is an integer number (49063538398).

Almost surely, 2^385819661671 is an apocalyptic number.

385819661671 is a deficient number, since it is larger than the sum of its proper divisors (6688645513).

385819661671 is a wasteful number, since it uses less digits than its factorization.

385819661671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13678641.

The product of its digits is 13063680, while the sum is 61.

The spelling of 385819661671 in words is "three hundred eighty-five billion, eight hundred nineteen million, six hundred sixty-one thousand, six hundred seventy-one".