10513540503 has 64 divisors (see below), whose sum is σ = 17645299200. Its totient is φ = 6146772480.

The previous prime is 10513540493. The next prime is 10513540547. The reversal of 10513540503 is 30504531501.

10513540503 is a `hidden beast` number, since 105 + 1 + 3 + 54 + 0 + 503 = 666.

It is not a de Polignac number, because 10513540503 - 2⁴ = 10513540487 is a prime.

It is a super-2 number, since 2×10513540503² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10513540003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 522100 + ... + 541862.

It is an arithmetic number, because the mean of its divisors is an integer number (275707800).

Almost surely, 2^10513540503 is an apocalyptic number.

10513540503 is a deficient number, since it is larger than the sum of its proper divisors (7131758697).

10513540503 is a wasteful number, since it uses less digits than its factorization.

10513540503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19869 (or 19863 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 10513540503 in words is "ten billion, five hundred thirteen million, five hundred forty thousand, five hundred three".