66283612756280 has 16 divisors (see below), whose sum is σ = 149138128701720. Its totient is φ = 26513445102496.

The previous prime is 66283612756237. The next prime is 66283612756321. The reversal of 66283612756280 is 8265721638266.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828545159414 + ... + 828545159493.

Almost surely, 2^{66283612756280} is an apocalyptic number.

It is an amenable number.

66283612756280 is an abundant number, since it is smaller than the sum of its proper divisors (82854515945440).

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

66283612756280 is a wasteful number, since it uses less digits than its factorization.

66283612756280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657090318918 (or 1657090318914 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 62.

The spelling of 66283612756280 in words is "sixty-six trillion, two hundred eighty-three billion, six hundred twelve million, seven hundred fifty-six thousand, two hundred eighty".