66660135510 has 16 divisors (see below), whose sum is σ = 159984325296. Its totient is φ = 17776036128.

The previous prime is 66660135499. The next prime is 66660135511. The reversal of 66660135510 is 1553106666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66660135511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1111002229 + ... + 1111002288.

It is an arithmetic number, because the mean of its divisors is an integer number (9999020331).

Almost surely, 2^66660135510 is an apocalyptic number.

66660135510 is an abundant number, since it is smaller than the sum of its proper divisors (93324189786).

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

66660135510 is a wasteful number, since it uses less digits than its factorization.

66660135510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222004527.

The product of its (nonzero) digits is 97200, while the sum is 39.

The spelling of 66660135510 in words is "sixty-six billion, six hundred sixty million, one hundred thirty-five thousand, five hundred ten".