10513794640 has 40 divisors (see below), whose sum is σ = 24515082720. Its totient is φ = 4193387136.

The previous prime is 10513794637. The next prime is 10513794659. The reversal of 10513794640 is 4649731501.

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

It is a super-2 number, since 2×10513794640² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 10513794593 and 10513794602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161610 + ... + 217129.

It is an arithmetic number, because the mean of its divisors is an integer number (612877068).

Almost surely, 2^10513794640 is an apocalyptic number.

10513794640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10513794640 is an abundant number, since it is smaller than the sum of its proper divisors (14001288080).

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

10513794640 is a wasteful number, since it uses less digits than its factorization.

10513794640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379099 (or 379093 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 10513794640 in words is "ten billion, five hundred thirteen million, seven hundred ninety-four thousand, six hundred forty".