6666620000 has 60 divisors (see below), whose sum is σ = 16400934396. Its totient is φ = 2666640000.

The previous prime is 6666619991. The next prime is 6666620053. The reversal of 6666620000 is 266666.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 146666 + ... + 186665.

Almost surely, 2^6666620000 is an apocalyptic number.

It is an amenable number.

6666620000 is an abundant number, since it is smaller than the sum of its proper divisors (9734314396).

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

6666620000 is an equidigital number, since it uses as much as digits as its factorization.

6666620000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333361 (or 333338 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 6666620000 is about 81649.3723184692. The cubic root of 6666620000 is about 1882.0676662503.

Adding to 6666620000 its reverse (266666), we get a palindrome (6666886666).

The spelling of 6666620000 in words is "six billion, six hundred sixty-six million, six hundred twenty thousand".