66020310512 has 20 divisors (see below), whose sum is σ = 137753917560. Its totient is φ = 30470912448.

The previous prime is 66020310511. The next prime is 66020310533. The reversal of 66020310512 is 21501302066.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66020310511) 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, 158702462 + ... + 158702877.

It is an arithmetic number, because the mean of its divisors is an integer number (6887695878).

Almost surely, 2^66020310512 is an apocalyptic number.

It is an amenable number.

66020310512 is an abundant number, since it is smaller than the sum of its proper divisors (71733607048).

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

66020310512 is a wasteful number, since it uses less digits than its factorization.

66020310512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317405360 (or 317405354 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

Adding to 66020310512 its reverse (21501302066), we get a palindrome (87521612578).

The spelling of 66020310512 in words is "sixty-six billion, twenty million, three hundred ten thousand, five hundred twelve".