10065431385 has 40 divisors (see below), whose sum is σ = 18625280256. Its totient is φ = 5195054880.

The previous prime is 10065431381. The next prime is 10065431423. The reversal of 10065431385 is 58313456001.

10065431385 is a `hidden beast` number, since 100 + 6 + 543 + 1 + 3 + 8 + 5 = 666.

It is not a de Polignac number, because 10065431385 - 2² = 10065431381 is a prime.

It is a super-2 number, since 2×10065431385² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10065431381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 388299 + ... + 413408.

Almost surely, 2^10065431385 is an apocalyptic number.

10065431385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10065431385 is a deficient number, since it is larger than the sum of its proper divisors (8559848871).

10065431385 is an equidigital number, since it uses as much as digits as its factorization.

10065431385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801755 (or 801746 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

Adding to 10065431385 its reverse (58313456001), we get a palindrome (68378887386).

The spelling of 10065431385 in words is "ten billion, sixty-five million, four hundred thirty-one thousand, three hundred eighty-five".