11555616660101 has 4 divisors (see below), whose sum is σ = 11555996472192. Its totient is φ = 11555236848012.

The previous prime is 11555616660073. The next prime is 11555616660131. The reversal of 11555616660101 is 10106661655511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11555616660101 - 2²² = 11555612465797 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 (11555616660131) 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, 189860405 + ... + 189921258.

It is an arithmetic number, because the mean of its divisors is an integer number (2888999118048).

Almost surely, 2^{11555616660101} is an apocalyptic number.

It is an amenable number.

11555616660101 is a deficient number, since it is larger than the sum of its proper divisors (379812091).

11555616660101 is an equidigital number, since it uses as much as digits as its factorization.

11555616660101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379812090.

The product of its (nonzero) digits is 162000, while the sum is 44.

The spelling of 11555616660101 in words is "eleven trillion, five hundred fifty-five billion, six hundred sixteen million, six hundred sixty thousand, one hundred one".