10385338640 has 40 divisors (see below), whose sum is σ = 24336061440. Its totient is φ = 4121421696.

The previous prime is 10385338589. The next prime is 10385338643. The reversal of 10385338640 is 4683358301.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (10385338643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 500930 + ... + 521249.

It is an arithmetic number, because the mean of its divisors is an integer number (608401536).

Almost surely, 2^10385338640 is an apocalyptic number.

10385338640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10385338640 is an abundant number, since it is smaller than the sum of its proper divisors (13950722800).

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

10385338640 is a wasteful number, since it uses less digits than its factorization.

10385338640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022319 (or 1022313 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 10385338640 in words is "ten billion, three hundred eighty-five million, three hundred thirty-eight thousand, six hundred forty".