13506260643 has 24 divisors (see below), whose sum is σ = 19705540608. Its totient is φ = 8913793392.

The previous prime is 13506260641. The next prime is 13506260659. The reversal of 13506260643 is 34606260531.

13506260643 is a `hidden beast` number, since 1 + 3 + 5 + 0 + 6 + 2 + 6 + 0 + 643 = 666.

It is not a de Polignac number, because 13506260643 - 2¹ = 13506260641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13506260598 and 13506260607.

It is not an unprimeable number, because it can be changed into a prime (13506260641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 521130 + ... + 546432.

It is an arithmetic number, because the mean of its divisors is an integer number (821064192).

Almost surely, 2^13506260643 is an apocalyptic number.

13506260643 is a deficient number, since it is larger than the sum of its proper divisors (6199279965).

13506260643 is a wasteful number, since it uses less digits than its factorization.

13506260643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25903 (or 25900 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 13506260643 in words is "thirteen billion, five hundred six million, two hundred sixty thousand, six hundred forty-three".