385618783872 has 512 divisors, whose sum is σ = 1237740134400. Its totient is φ = 104084766720.

The previous prime is 385618783871. The next prime is 385618783889. The reversal of 385618783872 is 278387816583.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (385618783871) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 564595243 + ... + 564595925.

It is an arithmetic number, because the mean of its divisors is an integer number (2417461200).

Almost surely, 2^385618783872 is an apocalyptic number.

385618783872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385618783872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (618870067200).

385618783872 is an abundant number, since it is smaller than the sum of its proper divisors (852121350528).

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

385618783872 is a wasteful number, since it uses less digits than its factorization.

385618783872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904 (or 892 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 66.

The spelling of 385618783872 in words is "three hundred eighty-five billion, six hundred eighteen million, seven hundred eighty-three thousand, eight hundred seventy-two".