66131416111255 has 16 divisors (see below), whose sum is σ = 86573451010464. Its totient is φ = 48094789034880.

The previous prime is 66131416111253. The next prime is 66131416111301. The reversal of 66131416111255 is 55211161413166.

It is a happy number.

66131416111255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66131416111255 - 2¹ = 66131416111253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66131416111253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6423672 + ... + 13172941.

It is an arithmetic number, because the mean of its divisors is an integer number (5410840688154).

Almost surely, 2^{66131416111255} is an apocalyptic number.

66131416111255 is a deficient number, since it is larger than the sum of its proper divisors (20442034899209).

66131416111255 is a wasteful number, since it uses less digits than its factorization.

66131416111255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19657986.

The product of its digits is 129600, while the sum is 43.

The spelling of 66131416111255 in words is "sixty-six trillion, one hundred thirty-one billion, four hundred sixteen million, one hundred eleven thousand, two hundred fifty-five".