66039166418136 has 16 divisors (see below), whose sum is σ = 165097916045400. Its totient is φ = 22013055472704.

The previous prime is 66039166418131. The next prime is 66039166418189. The reversal of 66039166418136 is 63181466193066.

It is a happy number.

It is a super-2 number, since 2×66039166418136² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66039166418136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66039166418131) 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, 1375815967021 + ... + 1375815967068.

Almost surely, 2^{66039166418136} is an apocalyptic number.

It is an amenable number.

66039166418136 is an abundant number, since it is smaller than the sum of its proper divisors (99058749627264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66039166418136 is a wasteful number, since it uses less digits than its factorization.

66039166418136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2751631934098 (or 2751631934094 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 60.

The spelling of 66039166418136 in words is "sixty-six trillion, thirty-nine billion, one hundred sixty-six million, four hundred eighteen thousand, one hundred thirty-six".