385809609644 has 24 divisors (see below), whose sum is σ = 689902811136. Its totient is φ = 188736002000.

The previous prime is 385809609637. The next prime is 385809609659. The reversal of 385809609644 is 446906908583.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5147852 + ... + 5222259.

It is an arithmetic number, because the mean of its divisors is an integer number (28745950464).

Almost surely, 2^385809609644 is an apocalyptic number.

It is an amenable number.

385809609644 is a deficient number, since it is larger than the sum of its proper divisors (304093201492).

385809609644 is a wasteful number, since it uses less digits than its factorization.

385809609644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10370317 (or 10370315 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 62.

The spelling of 385809609644 in words is "three hundred eighty-five billion, eight hundred nine million, six hundred nine thousand, six hundred forty-four".