66242062402 has 16 divisors (see below), whose sum is σ = 107193040632. Its totient is φ = 30584569600.

The previous prime is 66242062379. The next prime is 66242062409. The reversal of 66242062402 is 20426024266.

It can be written as a sum of positive squares in 4 ways, for example, as 61365693841 + 4876368561 = 247721^2 + 69831^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (66242062409) 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, 18378349 + ... + 18381952.

Almost surely, 2^66242062402 is an apocalyptic number.

66242062402 is a deficient number, since it is larger than the sum of its proper divisors (40950978230).

66242062402 is a wasteful number, since it uses less digits than its factorization.

66242062402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36760373.

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 66242062402 its reverse (20426024266), we get a palindrome (86668086668).

The spelling of 66242062402 in words is "sixty-six billion, two hundred forty-two million, sixty-two thousand, four hundred two".