13206239745 has 16 divisors (see below), whose sum is σ = 21135296832. Its totient is φ = 7041556800.

The previous prime is 13206239719. The next prime is 13206239773. The reversal of 13206239745 is 54793260231.

It is not a de Polignac number, because 13206239745 - 2¹¹ = 13206237697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13206239697 and 13206239706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47902 + ... + 169431.

It is an arithmetic number, because the mean of its divisors is an integer number (1320956052).

Almost surely, 2^13206239745 is an apocalyptic number.

13206239745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13206239745 is a deficient number, since it is larger than the sum of its proper divisors (7929057087).

13206239745 is a wasteful number, since it uses less digits than its factorization.

13206239745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221392.

The product of its (nonzero) digits is 272160, while the sum is 42.

Adding to 13206239745 its reverse (54793260231), we get a palindrome (67999499976).

The spelling of 13206239745 in words is "thirteen billion, two hundred six million, two hundred thirty-nine thousand, seven hundred forty-five".