66825352036 has 27 divisors (see below), whose sum is σ = 121143164779. Its totient is φ = 32253276608.

The previous prime is 66825351977. The next prime is 66825352039. The reversal of 66825352036 is 63025352866.

The square root of 66825352036 is 258506.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3550968100 + 63274383936 = 59590^2 + 251544^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66825352039) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14991120 + ... + 14995576.

Almost surely, 2^66825352036 is an apocalyptic number.

66825352036 is the 258506-th square number.

It is an amenable number.

66825352036 is a deficient number, since it is larger than the sum of its proper divisors (54317812743).

66825352036 is an frugal number, since it uses more digits than its factorization.

66825352036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8976 (or 4488 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 66825352036 in words is "sixty-six billion, eight hundred twenty-five million, three hundred fifty-two thousand, thirty-six".