10513605840 has 40 divisors (see below), whose sum is σ = 32592178848. Its totient is φ = 2803628160.

The previous prime is 10513605803. The next prime is 10513605841. The reversal of 10513605840 is 4850631501.

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

It is a super-2 number, since 2×10513605840² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10513605841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21903106 + ... + 21903585.

Almost surely, 2^10513605840 is an apocalyptic number.

10513605840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10513605840 is an abundant number, since it is smaller than the sum of its proper divisors (22078573008).

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

10513605840 is a wasteful number, since it uses less digits than its factorization.

10513605840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43806707 (or 43806701 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The spelling of 10513605840 in words is "ten billion, five hundred thirteen million, six hundred five thousand, eight hundred forty".