10345240640 has 168 divisors, whose sum is σ = 29582376192. Its totient is φ = 3432360960.

The previous prime is 10345240637. The next prime is 10345240657. The reversal of 10345240640 is 4604254301.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 475439 + ... + 496721.

Almost surely, 2^10345240640 is an apocalyptic number.

10345240640 is a gapful number since it is divisible by the number (10) 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 10345240640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14791188096).

10345240640 is an abundant number, since it is smaller than the sum of its proper divisors (19237135552).

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

10345240640 is a wasteful number, since it uses less digits than its factorization.

10345240640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21345 (or 21328 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 10345240640 its reverse (4604254301), we get a palindrome (14949494941).

The spelling of 10345240640 in words is "ten billion, three hundred forty-five million, two hundred forty thousand, six hundred forty".