385817813421 has 8 divisors (see below), whose sum is σ = 515048813760. Its totient is φ = 256899344352.

The previous prime is 385817813377. The next prime is 385817813431. The reversal of 385817813421 is 124318718583.

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

It is not a de Polignac number, because 385817813421 - 2¹⁴ = 385817797037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385817813431) 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, 78129936 + ... + 78134873.

It is an arithmetic number, because the mean of its divisors is an integer number (64381101720).

Almost surely, 2^385817813421 is an apocalyptic number.

It is an amenable number.

385817813421 is a deficient number, since it is larger than the sum of its proper divisors (129231000339).

385817813421 is a wasteful number, since it uses less digits than its factorization.

385817813421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156265635.

The product of its digits is 1290240, while the sum is 51.

The spelling of 385817813421 in words is "three hundred eighty-five billion, eight hundred seventeen million, eight hundred thirteen thousand, four hundred twenty-one".