66414826138 has 8 divisors (see below), whose sum is σ = 99631520640. Its totient is φ = 33204319260.

The previous prime is 66414826133. The next prime is 66414826171. The reversal of 66414826138 is 83162841466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 66414826091 and 66414826100.

It is not an unprimeable number, because it can be changed into a prime (66414826133) 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, 1519978 + ... + 1563061.

It is an arithmetic number, because the mean of its divisors is an integer number (12453940080).

Almost surely, 2^66414826138 is an apocalyptic number.

66414826138 is a deficient number, since it is larger than the sum of its proper divisors (33216694502).

66414826138 is a wasteful number, since it uses less digits than its factorization.

66414826138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093812.

The product of its digits is 1327104, while the sum is 49.

The spelling of 66414826138 in words is "sixty-six billion, four hundred fourteen million, eight hundred twenty-six thousand, one hundred thirty-eight".