66414136215 has 96 divisors (see below), whose sum is σ = 131552144064. Its totient is φ = 28428718080.

The previous prime is 66414136213. The next prime is 66414136253. The reversal of 66414136215 is 51263141466.

It is not a de Polignac number, because 66414136215 - 2¹ = 66414136213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66414136211) 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 95 ways as a sum of consecutive naturals, for example, 2448025 + ... + 2475005.

It is an arithmetic number, because the mean of its divisors is an integer number (1370334834).

Almost surely, 2^66414136215 is an apocalyptic number.

66414136215 is a deficient number, since it is larger than the sum of its proper divisors (65138007849).

66414136215 is a wasteful number, since it uses less digits than its factorization.

66414136215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27217 (or 27210 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The spelling of 66414136215 in words is "sixty-six billion, four hundred fourteen million, one hundred thirty-six thousand, two hundred fifteen".