66020565116 has 24 divisors (see below), whose sum is σ = 126382722816. Its totient is φ = 29927571120.

The previous prime is 66020565113. The next prime is 66020565133. The reversal of 66020565116 is 61156502066.

It is a self number, because there is not a number n which added to its sum of digits gives 66020565116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66020565113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2028086 + ... + 2060381.

It is an arithmetic number, because the mean of its divisors is an integer number (5265946784).

Almost surely, 2^66020565116 is an apocalyptic number.

It is an amenable number.

66020565116 is a deficient number, since it is larger than the sum of its proper divisors (60362157700).

66020565116 is a wasteful number, since it uses less digits than its factorization.

66020565116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088849 (or 4088847 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 38.

It can be divided in two parts, 66020 and 565116, that added together give a palindrome (631136).

The spelling of 66020565116 in words is "sixty-six billion, twenty million, five hundred sixty-five thousand, one hundred sixteen".