11661100601063 has 2 divisors, whose sum is σ = 11661100601064. Its totient is φ = 11661100601062.

The previous prime is 11661100601047. The next prime is 11661100601123. The reversal of 11661100601063 is 36010600116611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11661100601063 - 2⁴ = 11661100601047 is a prime.

It is a super-2 number, since 2×11661100601063² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11661100601863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830550300531 + 5830550300532.

It is an arithmetic number, because the mean of its divisors is an integer number (5830550300532).

Almost surely, 2^{11661100601063} is an apocalyptic number.

11661100601063 is a deficient number, since it is larger than the sum of its proper divisors (1).

11661100601063 is an equidigital number, since it uses as much as digits as its factorization.

11661100601063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

Adding to 11661100601063 its reverse (36010600116611), we get a palindrome (47671700717674).

The spelling of 11661100601063 in words is "eleven trillion, six hundred sixty-one billion, one hundred million, six hundred one thousand, sixty-three".