6661834506 has 24 divisors (see below), whose sum is σ = 15283032804. Its totient is φ = 2089987200.

The previous prime is 6661834463. The next prime is 6661834537. The reversal of 6661834506 is 6054381666.

It can be written as a sum of positive squares in 2 ways, for example, as 6661008225 + 826281 = 81615^2 + 909^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10885045 + ... + 10885656.

Almost surely, 2^6661834506 is an apocalyptic number.

6661834506 is an abundant number, since it is smaller than the sum of its proper divisors (8621198298).

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

6661834506 is a wasteful number, since it uses less digits than its factorization.

6661834506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21770726 (or 21770723 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 6661834506 is about 81620.0619088224. The cubic root of 6661834506 is about 1881.6172241244.

It can be divided in two parts, 66618 and 34506, that added together give a square (101124 = 318²).

The spelling of 6661834506 in words is "six billion, six hundred sixty-one million, eight hundred thirty-four thousand, five hundred six".