13245688865 has 8 divisors (see below), whose sum is σ = 15996068520. Its totient is φ = 10529056512.

The previous prime is 13245688847. The next prime is 13245688871. The reversal of 13245688865 is 56888654231.

It can be written as a sum of positive squares in 4 ways, for example, as 2170441744 + 11075247121 = 46588^2 + 105239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13245688865 - 2²² = 13241494561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13245688865.

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, 8435960 + ... + 8437529.

It is an arithmetic number, because the mean of its divisors is an integer number (1999508565).

Almost surely, 2^13245688865 is an apocalyptic number.

It is an amenable number.

13245688865 is a deficient number, since it is larger than the sum of its proper divisors (2750379655).

13245688865 is a wasteful number, since it uses less digits than its factorization.

13245688865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16873651.

The product of its digits is 11059200, while the sum is 56.

The spelling of 13245688865 in words is "thirteen billion, two hundred forty-five million, six hundred eighty-eight thousand, eight hundred sixty-five".