385387134500 has 96 divisors (see below), whose sum is σ = 884538695040. Its totient is φ = 146500099200.

The previous prime is 385387134499. The next prime is 385387134541. The reversal of 385387134500 is 5431783583.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 553271 + ... + 1037729.

It is an arithmetic number, because the mean of its divisors is an integer number (9213944740).

Almost surely, 2^385387134500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385387134500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442269347520).

385387134500 is an abundant number, since it is smaller than the sum of its proper divisors (499151560540).

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

385387134500 is a wasteful number, since it uses less digits than its factorization.

385387134500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484558 (or 484546 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 385387134500 in words is "three hundred eighty-five billion, three hundred eighty-seven million, one hundred thirty-four thousand, five hundred".