11552536131661 has 16 divisors (see below), whose sum is σ = 13300310522880. Its totient is φ = 9829126074240.

The previous prime is 11552536131641. The next prime is 11552536131677. The reversal of 11552536131661 is 16613163525511.

11552536131661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11552536131661 - 2¹⁷ = 11552536000589 is a prime.

It is a super-2 number, since 2×11552536131661² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11552536131641) 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, 11962891 + ... + 12892471.

It is an arithmetic number, because the mean of its divisors is an integer number (831269407680).

Almost surely, 2^{11552536131661} is an apocalyptic number.

It is an amenable number.

11552536131661 is a deficient number, since it is larger than the sum of its proper divisors (1747774391219).

11552536131661 is a wasteful number, since it uses less digits than its factorization.

11552536131661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942684.

The product of its digits is 486000, while the sum is 46.

The spelling of 11552536131661 in words is "eleven trillion, five hundred fifty-two billion, five hundred thirty-six million, one hundred thirty-one thousand, six hundred sixty-one".