385006431721 has 8 divisors (see below), whose sum is σ = 393996186144. Its totient is φ = 376018319040.

The previous prime is 385006431661. The next prime is 385006431773. The reversal of 385006431721 is 127134600583.

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 385006431721 - 2⁹ = 385006431209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385006438721) 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, 70566 + ... + 880336.

It is an arithmetic number, because the mean of its divisors is an integer number (49249523268).

Almost surely, 2^385006431721 is an apocalyptic number.

It is an amenable number.

385006431721 is a deficient number, since it is larger than the sum of its proper divisors (8989754423).

385006431721 is a wasteful number, since it uses less digits than its factorization.

385006431721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820871.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 385006431721 in words is "three hundred eighty-five billion, six million, four hundred thirty-one thousand, seven hundred twenty-one".