66115300712 has 64 divisors (see below), whose sum is σ = 134757691200. Its totient is φ = 30292587520.

The previous prime is 66115300709. The next prime is 66115300717. The reversal of 66115300712 is 21700351166.

It is not an unprimeable number, because it can be changed into a prime (66115300717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909239 + ... + 979257.

It is an arithmetic number, because the mean of its divisors is an integer number (2105588925).

Almost surely, 2^66115300712 is an apocalyptic number.

It is an amenable number.

66115300712 is an abundant number, since it is smaller than the sum of its proper divisors (68642390488).

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

66115300712 is a wasteful number, since it uses less digits than its factorization.

66115300712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70226 (or 70222 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

Adding to 66115300712 its reverse (21700351166), we get a palindrome (87815651878).

The spelling of 66115300712 in words is "sixty-six billion, one hundred fifteen million, three hundred thousand, seven hundred twelve".