11661313153153 has 4 divisors (see below), whose sum is σ = 11661381228628. Its totient is φ = 11661245077680.

The previous prime is 11661313153151. The next prime is 11661313153183. The reversal of 11661313153153 is 35135131316611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6913150128369 + 4748163024784 = 2629287^2 + 2179028^2 .

It is a cyclic number.

It is not a de Polignac number, because 11661313153153 - 2¹ = 11661313153151 is a prime.

It is a super-3 number, since 3×11661313153153³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11661313153151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33780138 + ... + 34123603.

It is an arithmetic number, because the mean of its divisors is an integer number (2915345307157).

Almost surely, 2^{11661313153153} is an apocalyptic number.

It is an amenable number.

11661313153153 is a deficient number, since it is larger than the sum of its proper divisors (68075475).

11661313153153 is an equidigital number, since it uses as much as digits as its factorization.

11661313153153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68075474.

The product of its digits is 72900, while the sum is 40.

Adding to 11661313153153 its reverse (35135131316611), we get a palindrome (46796444469764).

The spelling of 11661313153153 in words is "eleven trillion, six hundred sixty-one billion, three hundred thirteen million, one hundred fifty-three thousand, one hundred fifty-three".