66005941236 has 24 divisors (see below), whose sum is σ = 160710118464. Its totient is φ = 21045372480.

The previous prime is 66005941207. The next prime is 66005941249. The reversal of 66005941236 is 63214950066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119575705 + ... + 119576256.

It is an arithmetic number, because the mean of its divisors is an integer number (6696254936).

Almost surely, 2^66005941236 is an apocalyptic number.

It is an amenable number.

66005941236 is an abundant number, since it is smaller than the sum of its proper divisors (94704177228).

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

66005941236 is a wasteful number, since it uses less digits than its factorization.

66005941236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239151991 (or 239151989 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 66005941236 in words is "sixty-six billion, five million, nine hundred forty-one thousand, two hundred thirty-six".