385717725816 has 32 divisors (see below), whose sum is σ = 966138120960. Its totient is φ = 128326734432.

The previous prime is 385717725793. The next prime is 385717725823. The reversal of 385717725816 is 618527717583.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 385717725816.

It is a congruent number.

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, 15352240 + ... + 15377343.

It is an arithmetic number, because the mean of its divisors is an integer number (30191816280).

Almost surely, 2^385717725816 is an apocalyptic number.

It is an amenable number.

385717725816 is an abundant number, since it is smaller than the sum of its proper divisors (580420395144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385717725816 is a wasteful number, since it uses less digits than its factorization.

385717725816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30730115 (or 30730111 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 60.

The spelling of 385717725816 in words is "three hundred eighty-five billion, seven hundred seventeen million, seven hundred twenty-five thousand, eight hundred sixteen".