11662103542565 has 16 divisors (see below), whose sum is σ = 15993900566400. Its totient is φ = 7996791718080.

The previous prime is 11662103542561. The next prime is 11662103542603. The reversal of 11662103542565 is 56524530126611.

It is a happy number.

It is not a de Polignac number, because 11662103542565 - 2² = 11662103542561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11662103542561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2045570 + ... + 5244860.

It is an arithmetic number, because the mean of its divisors is an integer number (999618785400).

Almost surely, 2^{11662103542565} is an apocalyptic number.

It is an amenable number.

11662103542565 is a deficient number, since it is larger than the sum of its proper divisors (4331797023835).

11662103542565 is a wasteful number, since it uses less digits than its factorization.

11662103542565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303452.

The product of its (nonzero) digits is 1296000, while the sum is 47.

The spelling of 11662103542565 in words is "eleven trillion, six hundred sixty-two billion, one hundred three million, five hundred forty-two thousand, five hundred sixty-five".