113242523211661 has 16 divisors (see below), whose sum is σ = 117322819227648. Its totient is φ = 109189567584000.

The previous prime is 113242523211593. The next prime is 113242523211679. The reversal of 113242523211661 is 166112325242311.

It is a cyclic number.

It is not a de Polignac number, because 113242523211661 - 2¹⁹ = 113242522687373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113242529211661) 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, 5450035 + ... + 16005871.

It is an arithmetic number, because the mean of its divisors is an integer number (7332676201728).

Almost surely, 2^{113242523211661} is an apocalyptic number.

It is an amenable number.

113242523211661 is a deficient number, since it is larger than the sum of its proper divisors (4080296015987).

113242523211661 is a wasteful number, since it uses less digits than its factorization.

113242523211661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557132.

The product of its digits is 103680, while the sum is 40.

Adding to 113242523211661 its reverse (166112325242311), we get a palindrome (279354848453972).

The spelling of 113242523211661 in words is "one hundred thirteen trillion, two hundred forty-two billion, five hundred twenty-three million, two hundred eleven thousand, six hundred sixty-one".