66283716620 has 24 divisors (see below), whose sum is σ = 151849969488. Its totient is φ = 24103169600.

The previous prime is 66283716581. The next prime is 66283716649. The reversal of 66283716620 is 2661738266.

It is a super-3 number, since 3×66283716620³ (a number of 33 digits) contains 333 as substring.

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, 150644591 + ... + 150645030.

It is an arithmetic number, because the mean of its divisors is an integer number (6327082062).

Almost surely, 2^66283716620 is an apocalyptic number.

It is an amenable number.

66283716620 is an abundant number, since it is smaller than the sum of its proper divisors (85566252868).

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

66283716620 is a wasteful number, since it uses less digits than its factorization.

66283716620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301289641 (or 301289639 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 47.

The spelling of 66283716620 in words is "sixty-six billion, two hundred eighty-three million, seven hundred sixteen thousand, six hundred twenty".