66268534730 has 16 divisors (see below), whose sum is σ = 120338969544. Its totient is φ = 26272834560.

The previous prime is 66268534727. The next prime is 66268534733. The reversal of 66268534730 is 3743586266.

It is an interprime number because it is at equal distance from previous prime (66268534727) and next prime (66268534733).

It can be written as a sum of positive squares in 4 ways, for example, as 10148346121 + 56120188609 = 100739^2 + 236897^2 .

It is a super-2 number, since 2×66268534730² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66268534733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29321231 + ... + 29323490.

Almost surely, 2^66268534730 is an apocalyptic number.

66268534730 is a deficient number, since it is larger than the sum of its proper divisors (54070434814).

66268534730 is a wasteful number, since it uses less digits than its factorization.

66268534730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58644841.

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 66268534730 in words is "sixty-six billion, two hundred sixty-eight million, five hundred thirty-four thousand, seven hundred thirty".