66110632025013 has 12 divisors (see below), whose sum is σ = 95493235922188. Its totient is φ = 44073708171840.

The previous prime is 66110632024993. The next prime is 66110632025017. The reversal of 66110632025013 is 31052023601166.

66110632025013 is a `hidden beast` number, since 6 + 6 + 1 + 1 + 0 + 632 + 0 + 2 + 5 + 0 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 61407879797124 + 4702752227889 = 7836318^2 + 2168583^2 .

It is not a de Polignac number, because 66110632025013 - 2²¹ = 66110629927861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66110632025017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6622881 + ... + 13269657.

Almost surely, 2^{66110632025013} is an apocalyptic number.

It is an amenable number.

66110632025013 is a deficient number, since it is larger than the sum of its proper divisors (29382603897175).

66110632025013 is a wasteful number, since it uses less digits than its factorization.

66110632025013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7751924 (or 7751921 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 66110632025013 its reverse (31052023601166), we get a palindrome (97162655626179).

The spelling of 66110632025013 in words is "sixty-six trillion, one hundred ten billion, six hundred thirty-two million, twenty-five thousand, thirteen".